The grippers for the arms of the glasses are a rubber moulding with a slot. These eyewear holders are substantially more durable than those using a rubber ring and have remained tight.
eBay
Automatic Wire Stripping Peeling Cutting Machine 110/220V Pneumatic Dividing Line Tool for Within 12P Rehearsal Electronic Cable
Aliexpress UK
Black Adjustable Eyeglasses Cord Strap – Secure Glasses Holder. Never worry about dropping or losing your glasses again. Suitable for reading glasses, sunglasses, prescription glasses, and computer eyewear.
eBay
Foot Control Pedal 220-240V EU Plug Controller Switch & Power Cable for Brother Sewing Machine
Aliexpress UK
Approximate Holder length 27" (67.5cm). New, carded, Price per unit.
eBay
Eyeglasses Straps Bat Beads Link Chain Glasses Hollow Chains Eyewear Sunglasses Cable Holder Strap Neck Band Accessories Hot
Aliexpress UK
Whether you're wearing glasses or sunglasses, this adjustable strap will provide you with the security and comfort you need. Easy to Use: Simply connect the band strap to the arms of your glasses or sunglasses for a secure fit.
eBay
LAOA Cr-Ni Wire Cutter Cable Cutting Pliers Chrome-Nickel Cutter Diagonal Pliers Electrician Tools
Aliexpress UK
Not like other rubber made hard head strap. 1 x Neoprene Glasses Head Strap. Approx Size :- Hold Neck Cord 19cm x 2.5cm.
eBay
iiiMymic Lapel Tie Clip Microphone Skin Color Lavalier Mic Thick Cable For AKG Shure Sennheiser Wireless BodyPack Transmitter
Aliexpress UK
No more misplacing of glasses as you can wear them on your body with the help of this Lanyard. Prevent glasses and sunglasses from slipping. Goes with all types of glasses and sunglasses and with all outfits.
eBay
Deli CR-V 5/6 Inch Plastic Diagonal Pliers Multifunctional Cutting Side Scissors for Jewelry Wire Cable Electrical Tools
Aliexpress UK
Adjustable Sports Sunglasses Glasses Neck Cord Strap Retainer String Lanyard UK. Great for All Sports. Not To Be Mistaken For Cheaper Quality Being Sold.
eBay
MECHANIC R300 Desoldering Braid Solder Remover Wick Wire with Suction for Tin Welding BGA Repair Flux Lead Cord Welding Tools
Aliexpress UK
Available in a variety of popular colours! Approximate Holder length 27" (67.5cm).
eBay
for Original Rokid Glasses Smart AI&AR Glasses accessories,Magnetic Data Cable Charging/Prescription Frame/Clip-on Sunglasses
Aliexpress UK