--- product_id: 525324116 title: "40.7-42mm Binocular Rainguard/Eyepiece/Eyecup Cover/Dustguard/Eye Guard Cap Rubber Black, 40.7-42RG" brand: "generic" price: "$20.84" currency: USD in_stock: true reviews_count: 8 category: "Generic" url: https://www.desertcart.us/products/525324116-40-7-42mm-binocular-rainguard-eyepiece-eyecup-cover-dustguard-eye store_origin: US region: United States of America --- # Water & dust resistant protection Fits 40.7-42mm ocular lens diameter Flexible one-piece stretch design 40.7-42mm Binocular Rainguard/Eyepiece/Eyecup Cover/Dustguard/Eye Guard Cap Rubber Black, 40.7-42RG **Brand:** generic **Price:** $20.84 **Availability:** ✅ In Stock ## Summary > 🛡️ Protect your view, own every moment. ## Quick Answers - **What is this?** 40.7-42mm Binocular Rainguard/Eyepiece/Eyecup Cover/Dustguard/Eye Guard Cap Rubber Black, 40.7-42RG by generic - **How much does it cost?** $20.84 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/525324116-40-7-42mm-binocular-rainguard-eyepiece-eyecup-cover-dustguard-eye) ## Best For - generic enthusiasts ## Why This Product - Trusted generic brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **All-Weather Shield:** Defends your binocular lenses from rain, dust, and scratches—perfect for every adventure. - • **Effortless On & Off:** Quickly attach or remove the cover, and keep it handy by clipping to your binocular strap. - • **Durable Flexible Design:** One-piece stretch rubber ensures a tight, secure fit without compromising lens integrity. - • **Universal Compatibility:** Works flawlessly with popular models like 8x42, 10x42, 8x50, and more—your go-to lens guard. - • **Precision Fit for Your Optics:** Engineered to snugly fit ocular lenses between 40.7-42mm for seamless compatibility. ## Overview This 40.7-42mm binocular rainguard is a high-quality, flexible rubber cover designed to protect your ocular lenses from rain, dust, and scratches. It fits a wide range of standard binoculars and monoculars, offering a snug, stretch-fit design that’s easy to attach and remove, ensuring your optics stay pristine during transit, storage, and outdoor use. ## Description 【Measuring】Please measure the Outside diameter of the Ocular Lens outer tube's diameter to get accurate sizing, if the diameter is between 40.7-42mm, it will fit perfect. If the diameter is different, please choose a different size. 【Protection】These covers protect your lenses from rain, dust and scratches in any weather or environment. They also offer protection to your lenses in transit and storage. 【Easy to Remove / Add】Place the rainguard cover on the Ocular Lenses outer tubes to protect your lenses. You can conveniently attach to your binocular strap to keep within easy reach. 【Design】The high quality One piece flexible cover stretches for a tight fit. This ensures optimal protection for each Ocular lens. 【Fits Models】All the sizes we list allow you to find the correct size for all standard binoculars, monoculars and scopes. Compatible models include 8x30,10x30, 8x32, 10x32, 8x42,10x42, 8x50, 10x50, 8x56 and 10x56 models Review: Binocular rain guard - Good product. Fits my binoculars. Very reasonably priced. Hope I do not lose these! Review: Good fit for Nikon Monarch M5 12 x 42 binocs - These are good snug fit for my Nikon Monarch M5 12 x 42 binocs ## Features - 【Measuring】Please measure the Outside diameter of the Ocular Lens outer tube's diameter to get accurate sizing, if the diameter is between 40.7-42mm, it will fit perfect. If the diameter is different, please choose a different size. - 【Protection】These covers protect your lenses from rain, dust and scratches in any weather or environment. They also offer protection to your lenses in transit and storage. - 【Easy to Remove / Add】Place the rainguard cover on the Ocular Lenses outer tubes to protect your lenses. You can conveniently attach to your binocular strap to keep within easy reach. - 【Design】The high quality One piece flexible cover stretches for a tight fit. This ensures optimal protection for each Ocular lens. - 【Fits Models】All the sizes we list allow you to find the correct size for all standard binoculars, monoculars and scopes. Compatible models include 8x30,10x30, 8x32, 10x32, 8x42,10x42, 8x50, 10x50, 8x56 and 10x56 models ## Technical Specifications | Specification | Value | |---------------|-------| | Best Sellers Rank | #510 in Camera & Photo Products ( See Top 100 in Camera & Photo Products ) #235 in Binoculars | | Customer Reviews | 4.6 out of 5 stars 236 Reviews | ## Images ![40.7-42mm Binocular Rainguard/Eyepiece/Eyecup Cover/Dustguard/Eye Guard Cap Rubber Black, 40.7-42RG - Image 1](https://m.media-amazon.com/images/I/51IBUHzJFbL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Binocular rain guard *by A***R on October 16, 2025* Good product. Fits my binoculars. Very reasonably priced. Hope I do not lose these! ### ⭐⭐⭐⭐⭐ Good fit for Nikon Monarch M5 12 x 42 binocs *by R***O on November 29, 2025* These are good snug fit for my Nikon Monarch M5 12 x 42 binocs ### ⭐⭐⭐⭐ It's Okay *by J***3 on September 15, 2025* This eyepiece protector fits my binocular eyepiece fine. It works but I'm not overly impressed with the left side binocular strap holder. It's an open ended holder for that side strap, instead of being closed-ended like the other side. The design for that reason is not great, but I will say that for being China made, the rubber seems to be of decent quality, though I haven't used it yet in the field. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/525324116-40-7-42mm-binocular-rainguard-eyepiece-eyecup-cover-dustguard-eye](https://www.desertcart.us/products/525324116-40-7-42mm-binocular-rainguard-eyepiece-eyecup-cover-dustguard-eye) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-19*