---
product_id: 532835777
title: "A Pair of Binoculars Rubber Eye Cups Eye Guards Caps ID 40MM/1.57”Suit for 39mm/1.5“ - 42mm/1.65\" Microscope Eyepiece Telescopes Eyecups"
brand: "fslmeil"
price: "1078672₫"
currency: VND
in_stock: true
reviews_count: 9
category: "Fslmeil"
url: https://www.desertcart.vn/products/532835777-a-pair-of-binoculars-rubber-eye-cups-eye-guards-caps
store_origin: VN
region: Vietnam
---

# Universal fit for 39-42mm eyepieces 40mm inner diameter precision fit Durable rubber cushioning A Pair of Binoculars Rubber Eye Cups Eye Guards Caps ID 40MM/1.57”Suit for 39mm/1.5“ - 42mm/1.65" Microscope Eyepiece Telescopes Eyecups

**Brand:** fslmeil
**Price:** 1078672₫
**Availability:** ✅ In Stock

## Summary

> 👀 Upgrade your optics game with comfort and clarity!

## Quick Answers

- **What is this?** A Pair of Binoculars Rubber Eye Cups Eye Guards Caps ID 40MM/1.57”Suit for 39mm/1.5“ - 42mm/1.65" Microscope Eyepiece Telescopes Eyecups by fslmeil
- **How much does it cost?** 1078672₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/532835777-a-pair-of-binoculars-rubber-eye-cups-eye-guards-caps)

## Best For

- fslmeil enthusiasts

## Why This Product

- Trusted fslmeil brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Lightweight:** Just 1.13 ounces—adds comfort without bulk or weight
- • **Universal Compatibility:** Designed to upgrade your existing optical gear seamlessly
- • **Comfort Meets Durability:** Soft rubber material cushions eyes for extended use without fatigue
- • **Easy Installation, Instant Upgrade:** Snap-on design transforms your eyepiece experience in seconds
- • **Precision Fit for Enhanced Viewing:** Optimized 40mm diameter fits most binoculars & microscopes (39-42mm range)

## Overview

These premium rubber eye cups, sized at approximately 40mm inner diameter, are engineered to fit binoculars, telescopes, and microscope eyepieces ranging from 39mm to 42mm. Offering durable cushioning and easy installation, they enhance viewing comfort and reduce eye strain during prolonged use. Perfect for professionals and enthusiasts seeking a simple yet effective optical upgrade.

## Description

Item Name: Eye Cups Material: Rubber Inner Diameter: About 40MM/1.57” Suit 39mm/1.5“ - 42mm/1.65" binoculars telescopes or microscope eyepiece. Quantity: 1 Pair (2 Pieces)Eye Cups

Review: Fit - Fit great, made my binoculars work better
Review: Did not Fit a 39mm Binocular Eyepiece - Binocular eyepieces measure 39 mm. Description says these eye cups are suitable for 39 to 42 mm. The eye cups received are much too large and do not fit. Will be returning. Edit to above. Not only are the size of these eyepieces falsely advertised, the free returns also turns out to be false. I was charged a re-stocking fee when returned. IMO AVOID.

## Features

- Item Name: Eye Cups
- Material: Rubber
- Inner Diameter: About 40MM/1.57”
- Suit 39mm/1.5“ - 42mm/1.65" binoculars telescopes or microscope eyepiece.
- Quantity: 1 Pair (2 Pieces)Eye Cups

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C17B6LDL |
| Batteries required | No |
| Best Sellers Rank | #55 in Telescope Eyepieces |
| Customer Reviews | 3.5 3.5 out of 5 stars (26) |
| Item Weight | 1.13 ounces |
| Item model number | FSLMEIL-EC.. |
| Package Dimensions | 3.58 x 2.09 x 1.65 inches |

## Images

![A Pair of Binoculars Rubber Eye Cups Eye Guards Caps ID 40MM/1.57”Suit for 39mm/1.5“ - 42mm/1.65" Microscope Eyepiece Telescopes Eyecups - Image 1](https://m.media-amazon.com/images/I/61nYvNWRHXL.jpg)
![A Pair of Binoculars Rubber Eye Cups Eye Guards Caps ID 40MM/1.57”Suit for 39mm/1.5“ - 42mm/1.65" Microscope Eyepiece Telescopes Eyecups - Image 2](https://m.media-amazon.com/images/I/41d8p1OM7-L.jpg)
![A Pair of Binoculars Rubber Eye Cups Eye Guards Caps ID 40MM/1.57”Suit for 39mm/1.5“ - 42mm/1.65" Microscope Eyepiece Telescopes Eyecups - Image 3](https://m.media-amazon.com/images/I/51CbxzaXfzL.jpg)
![A Pair of Binoculars Rubber Eye Cups Eye Guards Caps ID 40MM/1.57”Suit for 39mm/1.5“ - 42mm/1.65" Microscope Eyepiece Telescopes Eyecups - Image 4](https://m.media-amazon.com/images/I/71M3xnXXbTL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fit
*by A***R on September 4, 2025*

Fit great, made my binoculars work better

### ⭐ Did not Fit a 39mm Binocular Eyepiece
*by K***R on May 16, 2025*

Binocular eyepieces measure 39 mm. Description says these eye cups are suitable for 39 to 42 mm. The eye cups received are much too large and do not fit. Will be returning. Edit to above. Not only are the size of these eyepieces falsely advertised, the free returns also turns out to be false. I was charged a re-stocking fee when returned. IMO AVOID.

### ⭐ Loose fit
*by B***L on June 13, 2025*

Be cautious when ordering these, say thirty nine millimeters, but they don't have the groove to go into the slot of the binocular. They slip over the lens area, but they do not fit tightly

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**Shop now:** [https://www.desertcart.vn/products/532835777-a-pair-of-binoculars-rubber-eye-cups-eye-guards-caps](https://www.desertcart.vn/products/532835777-a-pair-of-binoculars-rubber-eye-cups-eye-guards-caps)

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-03-24*