---
product_id: 75578533
title: "C-Line Retainer"
brand: "costa del mar"
price: "€ 45.99"
currency: EUR
in_stock: true
reviews_count: 5
category: "Costa Del Mar"
url: https://www.desertcart.es/products/75578533-c-line-retainer
store_origin: ES
region: Spain
---

# 20-inch adjustable length Ultrathin coated wire Lightweight design C-Line Retainer

**Brand:** costa del mar
**Price:** € 45.99
**Availability:** ✅ In Stock

## Summary

> 🕶️ Never lose your shades, always own the moment.

## Quick Answers

- **What is this?** C-Line Retainer by costa del mar
- **How much does it cost?** € 45.99 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/75578533-c-line-retainer)

## Best For

- costa del mar enthusiasts

## Why This Product

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

## Key Features

- • **Durable & Stylish:** Premium coated wire with signature logo bead for lasting performance and brand pride
- • **Custom Fit Comfort:** Adjustable 20-inch length for personalized wear and effortless convenience
- • **Sleek & Minimalist:** Ultrathin wire ensures a barely-there feel with maximum style
- • **Secure All-Day Hold:** Keeps your sunglasses perfectly in place, on and off the water
- • **Universal Compatibility:** Designed to fit all Costa sunglasses seamlessly—no compromises

## Overview

The Costa Del Mar C-Line Retainer is a 20-inch ultrathin, lightweight coated wire strap designed to securely hold all Costa sunglasses. Featuring an adjustable length and a signature logo bead, it combines durability with sleek style, ensuring your eyewear stays put whether you're on the water or on the go.

## Description

Fits most styles.

Review: The length is a bit shorter, but I like how it keeps my glasses up a bit higher when not wearing them. Great construction. Works perfectly with my Costa glasses.
Review: Easily clings, extends & shortens easily too.

## Features

- COSTA C-LINE RETAINER: The Costa C-Line retainer features ultrathin, lightweight coated wire with logo bead to make sure your sunglasses stay put, on and off the water.
- From end-to-end, the Costa C-Line Retainer measures 20".
- The Costa C-Line Adjustable Retainer is compatible with all Costa sunglasses.
- VISIT THE COSTA BRAND SHOP: Click on the Costa logo above to view the entire Costa sunglasses and accessories assortment.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B09BRVBGJS |
| Best Sellers Rank | 943,895 in Fashion ( See Top 100 in Fashion ) 514 in Men's Glasses Chains & Lanyards |
| Customer reviews | 4.6 4.6 out of 5 stars (6,058) |
| Date First Available  | 3 May 2014 |
| Department  | Men's |
| Manufacturer  | Costa Del Mar |
| Manufacturer reference  | CE |

## Images

![C-Line Retainer - Image 1](https://m.media-amazon.com/images/I/41CHtb--o8L.jpg)

## Questions & Answers

**Q: Are these straps adjustable? I know that it says that thay are in the info, but some reviews say that they aren't.**
A: No they're not adjustable. The ends attach to the sun glasses and the cord hangs behind your neck as it. Nothing to adjust.

**Q: What is the difference between C-line and C-mono?**
A: It's the material the strap is made of, the mono is made of monofilament the c-line is a rubber coated material

**Q: How long are they?**
A: Hi Marie,The retainer is about 18 inches long.  It is much shorter than most retainers, it is made to fit closely as some people don't like their sunglasses to hang too low.  Please keep in mind that the strap has a breakaway feature to prevent strangulation, much like a cat collar therefore has no warranty privileges.  It is an awesome super light weight strap and honestly most people love them, just beware not to yank on the glasses or you will snap off the end.I hope this was helpfulEJ's SunglassesAuthorized Costa del Mar dealer

**Q: This add is deceiving, picture in add indicates 16" length,  after placing in cart, item then lists as 13" ultra thin retainer? Need 16" or longer ???**
A: Hello,
The strap from end to end is 20" 
EJ's

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by S***R on 20 August 2025*

The length is a bit shorter, but I like how it keeps my glasses up a bit higher when not wearing them. Great construction. Works perfectly with my Costa glasses.

### ⭐⭐⭐⭐ Review
*by H***E on 20 October 2025*

Easily clings, extends & shortens easily too.

### ⭐⭐⭐⭐⭐ Review
*by R***S on 21 July 2017*

great product

## Frequently Bought Together

- Costa Del Mar BODY_STRAP Costa C-Line Retainer, Black, 20in
- Costa Del Mar Unisex Adult Bowline Silicone Retainer
- Costa Del Mar unisex-adult Fathom Cord

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**Shop now:** [https://www.desertcart.es/products/75578533-c-line-retainer](https://www.desertcart.es/products/75578533-c-line-retainer)

---

*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-03-01*