---
product_id: 435784924
title: "38.5-40.7mm Binocular Rainguard/Eyepiece/Eyecup Cover/Dustguard/Eye Guard Cap Rubber Black 38.5-40.7RG 0"
brand: "generic"
price: "$20.78"
currency: USD
in_stock: true
reviews_count: 8
category: "Generic"
url: https://www.desertcart.us/products/435784924-38-5-40-7mm-binocular-rainguard-eyepiece-eyecup-cover-dustguard
store_origin: US
region: United States of America
---

# Fits 38.5-40.7mm ocular lens diameter Flexible one-piece stretch design Protects against rain, dust & scratches 38.5-40.7mm Binocular Rainguard/Eyepiece/Eyecup Cover/Dustguard/Eye Guard Cap Rubber Black 38.5-40.7RG 0

**Brand:** generic
**Price:** $20.78
**Availability:** ✅ In Stock

## Summary

> 🕶️ Keep your vision crystal clear—rain or shine, never miss a moment!

## Quick Answers

- **What is this?** 38.5-40.7mm Binocular Rainguard/Eyepiece/Eyecup Cover/Dustguard/Eye Guard Cap Rubber Black 38.5-40.7RG 0 by generic
- **How much does it cost?** $20.78 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/435784924-38-5-40-7mm-binocular-rainguard-eyepiece-eyecup-cover-dustguard)

## 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 Lens Shield:** Defend your investment from rain, dust, and scratches—perfect for unpredictable outdoor adventures and daily commutes alike.
- • **Universal Compatibility:** Works flawlessly with a wide range of optics including 8x30 to 10x56 binoculars, monoculars, and scopes—your go-to lens guardian.
- • **Durable, Flexible Design:** Crafted from high-quality rubber that stretches for a tight, secure fit without compromising lens integrity or comfort.
- • **Effortless On/Off Convenience:** Quickly attach or remove the cover, and keep it handy by clipping to your binocular strap—never lose protection when you need it most.
- • **Precision Fit for Your Optics:** Engineered to snugly fit ocular lenses between 38.5-40.7mm, ensuring seamless compatibility with popular binocular and monocular models.

## Overview

This premium black rubber rainguard fits ocular lenses with diameters from 38.5 to 40.7mm, providing robust protection against rain, dust, and scratches. Designed for easy attachment and removal, it stretches to ensure a secure fit on a variety of binoculars, monoculars, and scopes, making it an essential accessory for professionals and enthusiasts who demand reliable lens protection in any environment.

## Description

【Measuring】Please measure the Outside diameter of the Ocular Lens outer tube's diameter to get accurate sizing, if the diameter is between 38.5-40.7mm, 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 38.5-40.7mm, 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 |
|---------------|-------|
| ASIN | B09SQ7DS7N |
| Best Sellers Rank | #468 in Camera & Photo Products ( See Top 100 in Camera & Photo Products ) #207 in Binoculars |
| Customer Reviews | 4.6 4.6 out of 5 stars (236) |
| Date First Available | February 3, 2022 |
| Department | unisex-adult |
| Item Weight | 0.702 ounces |
| Item model number | 38.5-40.7RG |
| Manufacturer | Stealth Birding Limited |
| Product Dimensions | 5.12 x 1.65 x 0.49 inches |

## Product Details

- **Brand:** Generic
- **Color:** Black
- **Frame Material:** Rubber
- **Frame Type:** Full Rim
- **Material:** Rubber

## Images

![38.5-40.7mm Binocular Rainguard/Eyepiece/Eyecup Cover/Dustguard/Eye Guard Cap Rubber Black 38.5-40.7RG 0 - Image 1](https://m.media-amazon.com/images/I/51IBUHzJFbL.jpg)

## 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.

## Frequently Bought Together

- 38.5-40.7mm Binocular Rainguard/Eyepiece/Eyecup Cover/Dustguard/Eye Guard Cap Rubber Black
- 42mm Binocular/Monocular Objective Lens Cover Rubber Set fits models with Outer Diameter 51.8-53.3mm

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-01-28*