Costa C-Line Adjustable Retainer 20in - Silver/Costa Blue | Costa Del Mar

Keep your Costa sunglasses secure with effortless style

The Costa C-Line Adjustable Retainer blends lightweight design with reliable security. Its ultrathin coated wire and adjustable bead sliders let you customize fit, so your frames stay in place whether you’re cruising on the water or strolling a sunny boardwalk.

Key features at a glance

• Ultrathin, lightweight coated wire with adjustable bead sliders for a personalized fit
• End-to-end length measures 20 inches, designed to sit comfortably on most faces
• Universal compatibility with all Costa sunglasses
• Authorized Costa shop assistance ensures access to full warranty and guarantees

What you might notice in real life

• Minimal, low-profile presence that won’t snag on clothing or gear
• Flexible enough to wear on and off the water without feeling bulky
• Easy to slip on or take off when transitioning between salty air and shaded interiors

Why this retainer stands out

Born from Costa’s long-standing passion for the ocean, the C-Line retainer is designed to stay put during dynamic activities. Its 20-inch length offers versatility for different face shapes, while the bead sliders deliver on-the-fly fit adjustments. Costa products sold by authorized sellers, like Amazon, are eligible for all manufacturer warranties and guarantees, helping you shop with confidence.

Explore the Costa brand shop to view the full sunglasses and accessories lineup, and consider how a simple retainer could complement your on-water routine. The 40-year heritage behind Costa sunglasses speaks to a commitment to performance, style, and protecting the watery world we call home.