10 Best Scope Covers

The best scope cover is the one that fits your optic correctly, protects the lenses from dust and moisture, and opens quickly without blocking your shot. A poor fit can pop loose, rub the finish, or make the rifle harder to use in the field. We looked at flip-up caps, bikini-style stretch covers, and full neoprene sleeves currently sold on Amazon, and picked ten that cover the common scope sizes, budgets, and use cases hunters and shooters actually deal with.

This is a buying guide first and a product list second. Scope-cover fit is model-specific: the same 40mm scope can need different cover sizes depending on the outside diameter of the bell, not the advertised lens size. Measure your scope before ordering, check the seller’s current size chart, and confirm the listing is still in stock, since sizes and availability change often.

Quick Picks Table

How We Chose

We started from the same checklist any buyer should use before ordering a scope cover, then matched it against current Amazon listings. Fit came first: we confirmed the outside diameter of the objective bell and eyepiece for each product, since that is what actually determines whether a cover works, not the scope’s advertised lens size (a 3-9x40mm scope will not necessarily take a 40mm-labeled cover). A “40mm objective” on the box does not mean the outside of the bell measures exactly 40mm, so use calipers when possible, or check the manufacturer’s accessory chart.

We also checked shape and clearance. Some eyepieces have fast-focus rings, illumination controls, throw levers, or raised ridges that change how a cover sits. If a scope has a sunshade, a large turret housing, or a low mount, the cover needs room to open without hitting anything. Every product below currently ships from Amazon or an Amazon-fulfilled seller, shows an in-stock listing, and has a public review history we could check for recurring fit or durability complaints.

Beyond fit, we weighed four practical factors: secure retention (does it stay on during recoil, walking, and case transport), quiet operation (hunters need to avoid loud snapping or rattling), glove-friendly handling in cold weather, and how well the seal reduces dust and moisture without pretending to make a scope waterproof on its own. Hinges, elastic, and rubber lips wear over time, so we also read through recent reviews for reports of cracking, splitting, or loosening.

1. Butler Creek Objective Flip Open Scope Cover

Best for: Hunters who want the standard flip-up cap that most gunsmiths and range regulars already trust.

Key specs (from the Amazon listing): Polymer construction, semi O-ring seal, ambidextrous silent spring hinge, rated from -40°F to 120°F, weighs about 5 grams, available in more than two dozen bell-diameter sizes (the size 27 variant fits a 46.7mm objective bell).

Pros

• Silent spring hinge that will not spook game when it flips open
• Semi O-ring seal keeps out routine dust and light rain
• Wide range of sizes covers most common objective bell diameters

Cons

• Sizing chart takes some care since it is based on outside bell diameter, not lens diameter
• Some reviewers report the latch loosening after repeated flexing

Skip this if: your scope’s bell diameter falls between listed sizes or has a raised ridge that the semi O-ring cannot seal against.

2. Vortex Optics Defender Riflescope Flip Cap

Best for: Owners of Vortex riflescopes who want a metal cap built specifically for their scope line.

Key specs (from the Amazon listing): Aluminum body, stainless steel spring with stop positions at both 45 and 180 degrees, weighs about 1.3 ounces, sold in objective sizes from 24mm to 56mm plus a matching eyepiece option, backed by Vortex’s unlimited warranty.

Pros

• Stainless steel spring holds the cap open at more than one angle
• Aluminum construction resists cracking better than plastic clamshell caps
• Covered by Vortex’s no-questions warranty if it fails

Cons

• Costs more than most flip-up caps in this list
• Some reviewers with non-standard objective bells report a tight or slightly loose fit outside Vortex’s own scope lineup

Skip this if: your scope is not a Vortex model and its bell diameter does not line up cleanly with one of the listed sizes.

3. Monstrum Rubberized Flip-Up Rifle Scope Lens Covers

Best for: Shooters who want a budget flip-up cap in a size range that stretches across many scope brands.

Key specs (from the Amazon listing): Rubber and polymer construction, spring-loaded flip mechanism, weighs about 27 grams, sold separately for eyepiece (37 to 48mm outside diameter) and objective (26 to 66mm outside diameter) in nine total size ranges.

Pros

• Rubber sleeve stretches to grip a range of outside diameters instead of needing an exact match
• Noticeably lower price than most metal flip caps
• Sold in black or flat dark earth to match different rifle finishes

Cons

• Several reviewers report the rubber sleeve splitting after one to two seasons of hard use
• Eyepiece and objective covers look identical, which makes it easy to mix them up during installation

Skip this if: you need a cover that will hold up under years of daily field abuse rather than seasonal range use.

4. Leupold Alumina Flip Back Lens Cover Kit

Best for: Leupold scope owners who want a premium, low-profile cover that matches the optic’s finish.

Key specs (from the Amazon listing): Machined from 6061-T6 aircraft-grade aluminum, closes with a neodymium magnet, sealed with triple O-rings, weighs about 3.2 ounces, this kit covers the 40mm objective and standard eyepiece for scopes built after 2004, and the cover rotates so it can open in any direction.

Pros

• Magnetic closure opens and closes with almost no sound, which matters for hunters
• Low-profile design lays flatter against the scope than plastic clamshell caps
• Can be installed without removing the scope from the rings

Cons

• Priced well above every other cover on this list
• Only fits Leupold scopes built after 2004, and older models need a separate adapter

Skip this if: you own a pre-2004 Leupold scope or any non-Leupold optic, since this kit is built around Leupold’s specific bell and eyepiece dimensions.

5. Butler Creek Bikini Rifle Scope Cover

Best for: Shooters who want one simple stretch cover for storage and transport rather than two separate flip caps.

Key specs (from the Amazon listing): One-piece design with stretch retainers connecting two rubber end caps, fits riflescopes with objectives up to 62mm outside diameter, weighs about 1.6 ounces, made for scopes in roughly the 11 to 13 inch length range.

Pros

• One product covers both the objective and eyepiece ends
• Creates a snug, watertight seal that many long-time owners report lasting for years
• Folds flat and fits in a pocket once removed

Cons

• Must be pulled off completely before shooting, so it is not a fast-access option
• A tight fit on some scopes makes installation awkward the first few times

Skip this if: you need to flip a cover open quickly for a shot rather than removing it entirely first.

6. KEMIMOTO Neoprene Scope Cover

Best for: Shooters who want a full-length sleeve that protects the scope tube and turrets during travel, not just the lenses.

Key specs (from the Amazon listing): Thick stretch neoprene body with a hard round pad at one end, pull-tab design, weighs about 3.2 ounces, sold in five length ranges from 9 to 18 inches.

Pros

• Covers the whole scope body, including turrets, not just the lenses
• Padded end adds impact protection during case transport
• Five length options make it easier to match to a specific scope

Cons

• Has to be removed entirely before shooting
• A few reviewers note the material runs slightly short for scopes at the top of a size range

Skip this if: you need fast lens access in the field rather than storage and transport protection.

7. Allen Company Peak Neoprene Scope Cover

Best for: Backcountry hunters who want a cushioned sleeve that protects against bumps during a long pack-out.

Key specs (from the Amazon listing): Neoprene body with a stretch poly jersey lining, pull-tab opening, the large size fits scopes up to 15 inches long with lenses up to 56mm in diameter, also sold in a medium and a one-size option.

Pros

• Cushioned neoprene body absorbs bumps better than a thin rubber sleeve
• Pull-tab design allows a quick single-motion removal
• Reasonably priced compared to other padded sleeves

Cons

• At least one reviewer found the large size runs closer to 52mm than the listed 56mm for lens diameter
• Not designed for scopes with tall target turrets

Skip this if: your scope’s objective lens is right at the upper edge of the size range, since the listed maximum may run tighter than expected.

8. CVLIFE Waterproof Neoprene Scope Cover

Best for: Shooters who want a neoprene sleeve with a built-in cleaning cloth and a snugger bottom closure.

Key specs (from the Amazon listing): Thicker waterproof neoprene, built-in lens cleaning cloth and fixed strap sewn into the design, bottom elastic cord for a tighter wrap, weighs about 1.7 ounces, sold in 10-12, 12-14, and 14-17 inch lengths.

Pros

• Built-in lens cloth means one less accessory to carry separately
• Elastic cord at the bottom keeps the cover snug even on narrower scope tubes
• Covers turrets fully, which matters for scopes stored in a safe

Cons

• Some reviewers report the smaller size runs tight and stretches less than expected
• Fewer total reviews than the more established brands in this list

Skip this if: your scope is right at the edge of a size range and you are not able to size up if the fit is too tight.

9. Hornady 40mm Neoprene Slip-On Scope Cover

Best for: Owners of standard medium-length hunting scopes, such as a common 3-9x40mm setup, who want a name-brand neoprene sleeve.

Key specs (from the Amazon listing): Neoprene construction sized for roughly 13 inch scopes with a 40mm objective, backed by a one-year warranty, not designed to fit over tall target-style turrets.

Pros

• Neoprene wicks moisture away from the scope body to help resist rust and corrosion
• Backed by a one-year manufacturer warranty
• Recognizable brand name for shooters who already trust Hornady gear

Cons

• Only sold in one size, so it will not fit noticeably longer or shorter scopes
• Will not clear tall target-style turrets

Skip this if: your scope has tall target turrets or is significantly longer or shorter than a standard 13 inch hunting scope.

10. Butler Creek Eyepiece Flip Open Scope Cover

Best for: Pairing with an objective flip cap (like pick #1) to get a matched, fast-access set for both ends of the scope.

Key specs (from the Amazon listing): Plastic construction, silent ambidextrous spring hinge, rated from -40°F to 120°F, weighs about 5 grams, available in 16 eyepiece sizes (the size 19 variant fits a 43.9mm eyepiece).

Pros

• Matches the objective flip cap from the same product family for a consistent look and fit
• Silent hinge and quick-thumb opening work the same way as the objective version
• Wide size range covers most fast-focus and standard eyepieces

Cons

• Sizing chart has many close options, which makes it easy to order the wrong one
• Some reviewers say the hinge can crack if bumped hard while open

Skip this if: your eyepiece has a large fast-focus ring or raised housing that does not match one of the standard listed sizes.

Buying Guide: Choosing the Right Scope Cover

Flip-Up Caps vs. Neoprene Sleeves

Flip-up caps (plastic, rubber, or aluminum) stay mounted on the scope and open with a flick of the thumb, which makes them the better choice for hunting and any situation where you need the shot fast. Neoprene sleeves cover the entire scope body, including the turrets, and protect against bumps and scratches during transport and storage, but they have to be removed completely before you can see through the scope. Many shooters use both: a flip-up cap for lens protection in the field, and a neoprene sleeve over the whole rifle when it is in a case or gun safe.

Fit by Scope Diameter and Length

Flip-up and bikini-style covers are sized by the outside diameter of the objective bell and eyepiece, not by the scope’s advertised magnification or lens size. Measure both ends with calipers if you have them, and check the seller’s current size chart before ordering, since a 3-9x40mm scope will not automatically take a “40mm” cover. Neoprene sleeves are sized by the total length of the scope, typically in ranges like 10-12, 12-14, or 14-17 inches, so measure the mounted scope from end to end, and size up if your measurement falls near the top of a range.

Weather Protection and Field Use

A scope cover reduces dust, rain, and debris exposure, but it does not make a scope waterproof on its own. The scope itself still needs proper internal sealing from the manufacturer. Practice opening or removing your covers with the rifle unloaded before you head to the field, and confirm the covers do not touch the barrel, bolt handle, or magnification ring when open. Scope covers should never distract from firearm safety: keep the muzzle pointed in a safe direction, confirm your target and backstop, and remove or open covers before you settle into a shot. The NSSF safety resources are a solid baseline for safe firearm handling in the field.

Common Buying Mistakes

• Ordering by objective lens size instead of measuring the outside bell diameter
• Forgetting to measure the eyepiece separately, since it is often a different size than the objective
• Choosing a flip-up cap that hits the barrel, turret, or scope mount when opened
• Buying a loose-fitting cover that falls off in a pack or during recoil
• Assuming any cover makes the scope fully waterproof rather than just splash and dust resistant

Frequently Asked Questions

Q: Are flip-up scope covers worth it?
A: Yes, if they fit correctly, open quietly, and stay clear of your sight picture. A poorly fitted flip-up cap is often more annoying than a simple bikini or neoprene cover.

Q: How do I know what size scope cover to buy?
A: Measure the outside diameter of the objective bell and eyepiece separately with calipers, then match that measurement to the seller’s current size chart rather than the scope’s advertised lens size.

Q: Do scope covers keep water out completely?
A: No. They reduce exposure to rain, dust, and debris, but the scope itself still needs its own internal waterproof sealing from the manufacturer.

Q: Should I use scope covers at the range as well as while hunting?
A: Yes. Covers keep dust and fingerprints off the lenses between strings of fire. Just remove or flip them open before firing.

Q: What is the difference between a bikini cover and a neoprene sleeve?
A: A bikini cover is a one-piece stretch cap that seals just the objective and eyepiece ends. A neoprene sleeve covers the entire scope body, including the turrets, and is better suited to storage and transport rather than quick field access.

Q: Can I use a flip-up cap and a neoprene sleeve at the same time?
A: Yes, and many shooters do. The flip-up cap protects the lenses in the field, while a neoprene sleeve goes over the whole scope for extra padding in a case or gun safe.

Q: Why do flip-up caps sometimes come loose over time?
A: Repeated flexing wears down the hinge spring or the rubber sleeve that grips the scope body. If a cap starts popping open on its own, it is usually time to replace it rather than force a larger size onto a worn mount.

Q: Will a neoprene sleeve fit over a scope with a sunshade or large turret housing?
A: Not always. Measure the total length including any sunshade, and check whether the listing mentions clearance for raised turret housings before ordering.

Final Recommendation

For most rifle owners, a Butler Creek-style flip-up cap sized to your specific objective bell and eyepiece is the simplest, most field-tested choice, and pairing the objective and eyepiece versions gives you fast, quiet access without giving up protection. If you shoot a Vortex or Leupold scope, the brand-matched flip caps from those makers are worth the extra cost for a cleaner fit and lower profile. For storage and transport, add a neoprene sleeve, such as the KEMIMOTO or Allen Company options above, over the whole scope when it rides in a case or safe. Whichever style you choose, measure your scope carefully, check the current listing before buying, and test the cover at home before you rely on it in the field.