Neoprene

Fits snugly and adjustable to meet my comfort. I had bought this mainly for when I go to the beach or the pool so I don’t lose my glasses, but I had also gone river rafting with them and they came in handy when I got jumbled around and my glasses stayed on my person. It’s also nice that you can adjust it to be as tight or as loose as you can, and the snug fit is still does not change. These glasses will stay in for the most part no matter what length you go.

1. Firm fit! The ends come up on frame about 1 3/4 inches--stay on strong 2. Classic clean design 3. Will not come off when I move glasses around: a) top of head or b) down to chest 4. Good material 5. Royal blue is highly visible on my dresser top 6. Understated "Branding", i.e. "Chums" small print on right side 7. WIDE BAND at back--essential for moving around 8. Just as useful for regular glasses "Sometimes, you have to kiss a lot of frogs before you find your prince"

Works perfectly to keep my sunglasses around my neck when I take them off. Fits is a little tight but works just fine.

Will not fit on Costa Tuna Alley. Product seemed fine but wouldn’t fit. If I’d tried to force it, I’m pretty sure the material would have torn.

Works great. Holds my glasses on my head and I don't have to worry about them falling on the floor anymore

They were doing an ok job and they made my sunglasses float but my sun glasses would fall out of this thing almost every day. The sunglass arms weren’t super small or anything so I don’t believe it was a user error. I jumped off a boat to only find the strap left as my sunglasses were sinking to the bottom. They fell out while mountain biking as well. Only buy if you want this to hold your sunglasses when you’re not doing active things.

I bought wo. These are dependable in keeping your glasses on very active sports enthusiasts who sail, surf, kayak, windsurf, water ski, bicycling, parachute jumping, etc., etc., etc. These Chums eyeglass holders fit my big head (US size 8 hat) but can be adjusted to fit smaller heads. My wife has a US hat size 6 3/4. These do not slip, hold your glasses firmly, and are comfortable. They also dry quickly. I don't do a lot of winter sports anymore but these would also be great for snowboarding, Alpine & X0Country skiing, etc. I bought two pairs. These are sturdy but it's always good to have more than one .....just in case.

Bought for my husband. It was meant to be used while he went kayaking but he wears it everyday because he loves that his glasses stay put. Great value

Easy to use Great feel, does not bother me when wearing, especially that there is nothing dangling at my back. Delivered on time.

Top quality

Se ajustan perfecto, costo un poco pues mi armazón es grueso pero una vez puesto es excelente

great item and works really well with my sunglasses, it fits behind my ears well and would highly recommend!

Only can fit glasses with very slim handles doesn't stretch much. Handles get stuck inside when it's too tight.