Will these fit Costa Bloke ?

They should. Our Switchback retainers have 2 different openings, one for smaller ends and one for regular/larger ends.

Switchback Silicone Retainer Black Smoke | Desertcart British Virgin Islands

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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$36.84

Duties & taxes included

In stock

Sold byAmazon British Virgin IslandsDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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

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Description

👓 Never lose your style or your glasses again!

FEATHERWEIGHT DESIGN - At just 0.5 oz, it’s so light you’ll forget you’re even wearing it—perfect for busy professionals on the move.
FLEXIBLE WEAR OPTIONS - Attach right side up or upside down for personalized convenience and style.
DURABILITY MEETS STYLE - UV and corrosion resistant material keeps your retainer looking fresh and lasting longer.
EFFORTLESS ALL DAY COMFORT - One-piece molded silicone that feels like a second skin, no irritation guaranteed.
UNIVERSAL FRAME COMPATIBILITY - Dual ports engineered to securely hold both wire and large frames—never worry about fit again.

The Chums Switchback Silicone Retainer is a sleek, one-piece eyewear accessory designed for maximum comfort and versatility. Weighing only 0.5 oz, it features a dual-port system that fits a wide range of frame sizes, from wire to large styles. Made from UV and corrosion resistant silicone, it offers durable, irritation-free wear with flexible attachment options, making it the go-to choice for professionals who demand both function and fashion.

Specifications

ASIN	B07GKWJ5S6
Age Range Description	Adult
Brand Name	Chums
Care instructions	Clean with mild soap and water. Avoid extreme heat and sharp objects.
Closure type	Ports
Color	Black/Smoke
Customer Reviews	4.6 out of 5 stars 179 Reviews
Fastener Type	ports
Garment Size Country	United Arab Emirates
Item Dimensions	10.2 x 15.2 x 2.5 centimeters
Item Weight	0.5 Ounces
Manufacturer	Chums
Manufacturer Part Number	12308199
Material Type	Silicone
Pattern	Solid
Size	One Size
Style Name	Modern
Style Number	12308885
UPC	093039845612
Unit Count	1.00 Count

Reviews

D**N

Never lose your glasses

Very comfortable and easy to wear without tangles

6.07.2026

B**9

The Best

Have used these retainers for years. They stay on the earpiece and are large enough to accommodate an earpiece with a large end. It is also long enough to hang the sunglasses well below the chin. It is also soft enough and flexible enough to be stored in with the sunglasses. Of all the retainers I have used over the years, this one is my go to retainer

10.02.2026

M**R

Retainer

Great retainer holds securely

20.04.2026

J**N

no surprises

It is as it looks and does what you want. I'm happy.

2.07.2026

L**S

Great product!

Great!

18.05.2026

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

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months ago

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Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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