Terra System Adjustable Eyewear Retainer Combo, Black, 12 Inch

Comes with 2 sets of ends to connect glasses with small side arms or med-large arms. Easy to place on your sunglasses (or prescription). I've worn these on my sunglasses 3 times already on a boat for over 8 hours. I could not feel them at all (which is what you want). They fit snug and won't slide off. The cord is smooth and easy to adjust via the slide. Once adjusted the slide keeps your glasses firm on your head. A must have to avoid placing your glasses over your head or having them fall off during high activity (e.g. fishing or sailing or bike riding).

I like these but don't love them (due to CON below).PRO: They do a good job of keeping glasses close to the face while doing different activities. The rubber ends do fit perfectly on my glasses and don't come off. I also find it helpful to snap off the cord temporarily when I don't want to use it.CON: Two weeks after purchasing, the cord began to fray and the inside white braid has popped out. I can no longer use the slider for the entire cord because of this. I think a different retainer with a smaller cord might be a better choice since it wouldn't be as likely to fray.

The XL ends fit my Costa Del Mar Fathoms perfectly, moistened the frames a little and they slide right on and hold firmly. I like this design better than the Fathom Cord because they hold at the tip instead of mid-frame and even hold better behind the ears keeping the glasses more firmly in place. The only draw back is that the over-all cord length is a little longer than I need and occasionally gets tangled in my collar.

Bought these to keep glasses snug to our faces while exercising and doing outdoor chores (grass mowing etc). Also used while scrubbed in the OR - much better than glasses taped to one's face or cap. They do the trick and I've already bought a second pair. We'll continue buying them as needed for replacements and to have in multiple places around the house and at work.

I drill a time hole through the earpiece covers and end of my sunglass eyepieces, through which I wrap a thin piece of stainless-steel wire around. In the three I've been surfing surf-ski kayaks, I have never lost a pair of sunglasses! 99% of the users who use this product will never need anything more than the covers themselves to retain their glasses but i like to play in extreme environments with a much greater chance for loosing stuff. I put these on all my glasses, including my reading glasses.

Having broken two pairs of Maui Jims by having them slip out if my shirt pocket, I have been using these for two years. They fit snugly on the earpiece but don't bother me when I'm wearing them (or when they're just hanging around my neck). I hope to never have to spend the $ for another Maui Jim repair!!

I would recommend this

Is very very good USA made not Chinese made.I was looking for something very good to hold up my sunglass and I got it, well designed, is really USA made.

Now my glasses don't fall all the time because of the Covid-19 mask. Very happy with this product.

We mostly use the rubber ends to help grip the head and save the strings for when we're out on the water. They work well!

Works great. Prevents glasses from slipping down nose, or falling off during sports.

Not great but acceptable. Still contemplating of whether to return it.

i don't like the adjustment fitting ir the texture of the chord. I'm not using it