--- product_id: 289022106 title: "unisex-adult C-line Retainer Leash (pack of 1)" brand: "costa del mar" price: "$34.90" currency: USD in_stock: true reviews_count: 5 category: "Costa Del Mar" url: https://www.desertcart.us/products/289022106-unisex-adult-c-line-retainer-leash-pack-of-1 store_origin: US region: United States of America --- # universal fit for all Costa sunglasses 20" ultrathin coated wire lightweight & flexible design unisex-adult C-line Retainer Leash (pack of 1) **Brand:** costa del mar **Price:** $34.90 **Availability:** ✅ In Stock ## Summary > 🕶️ Never lose your shades, always keep your cool. ## Quick Answers - **What is this?** unisex-adult C-line Retainer Leash (pack of 1) by costa del mar - **How much does it cost?** $34.90 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/289022106-unisex-adult-c-line-retainer-leash-pack-of-1) ## 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 - • **Secure Your Style:** Ultrathin 20" coated wire keeps your sunglasses exactly where you want them—no slips, no drops. - • **Featherlight Comfort:** Experience barely-there wear with a flexible, lightweight design that won’t weigh you down during your busiest days. - • **Discreet & Minimalist:** Sleek, low-profile retainer with a subtle logo bead—effortlessly stylish without shouting for attention. - • **Easy Care, Long Lasting:** Simple hand wash maintenance keeps your retainer fresh and ready for every adventure. - • **Universal Compatibility:** Seamlessly pairs with all Costa sunglasses, making it the perfect everyday essential for your eyewear collection. ## Overview The Costa Del Mar C-Line Retainer Leash is a 20-inch ultrathin, lightweight coated wire strap designed to securely hold all Costa sunglasses. Crafted from 100% silicone, it offers a minimalist, flexible fit that ensures your eyewear stays put on and off the water. Easy to maintain and universally compatible, it’s the perfect accessory for professionals who demand both style and function. ## Description Never forget where your sungl are again with sunglass retainers from Costa Del Mar. Flexible and lightweight, these minimally designed retainers will ensure your frames stay exactly where you need them. Costa products sold by authorized sellers, like desertcart.com, are eligible for all manufacturer warranties and guarantees. Visit the Costa shop by clicking on the brand link above to shop the entire Costa assortment. Review: Excellent product however slightly fragile - Slightly fragile but so easy and discreet to use Review: Excelente! - Es ta muy bien el producto ## Features - COSTA C-LINE RETAINER: The Costa C-Line retainer features ultrathin, lightweight coated wire with logo bead to make sure your sungl 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 sungl. - VISIT THE COSTA BRAND SHOP: Click on the Costa logo above to view the entire Costa sungl and accessories assortment. ## Technical Specifications | Specification | Value | |---------------|-------| | Care instructions | Hand wash with cold water. Do not bleach. Lay out in the open air and away from heat. | | Material composition | 100% Silicone | | Outer material | Silicone | | Water resistance level | Not Water Resistant | ## Images ![unisex-adult C-line Retainer Leash (pack of 1) - 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 ### ⭐⭐⭐⭐⭐ Excellent product however slightly fragile *by B***L on 20 October 2019* Slightly fragile but so easy and discreet to use ### ⭐⭐⭐⭐⭐ Excelente! *by R***A on 12 January 2023* Es ta muy bien el producto ### ⭐⭐⭐⭐⭐ High quality and perfect design *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. ## 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 --- ## 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/289022106-unisex-adult-c-line-retainer-leash-pack-of-1](https://www.desertcart.us/products/289022106-unisex-adult-c-line-retainer-leash-pack-of-1) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-21*