Are these straps adjustable? I know that it says that thay are in the info, but some reviews say that they aren't.

No they're not adjustable. The ends attach to the sun glasses and the cord hangs behind your neck as it. Nothing to adjust.

What is the difference between C-line and C-mono?

It's the material the strap is made of, the mono is made of monofilament the c-line is a rubber coated material

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

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 ???

Hello, The strap from end to end is 20" EJ's

Desertcart Logo

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

169.94 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

Description

🕶️ Never lose your shades, always own the moment.

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

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.

Reviews

S**R

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.

20.08.2025

H**E

Easily clings, extends & shortens easily too.

20.10.2025

R**S

great product

21.07.2017

D**.

Good strap. Seems to be well constructed. Purchased it to use at work but like it so much I use it all the time.

2.11.2025

A**R

The description says it is compatible with all Costa, i have jose 10. Sadly doesnt fit.

16.07.2022

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

169.94 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

View all Trustpilot reviews

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

C-Line Retainer

Description

Specifications

Reviews

Common Questions