Ordered this product to go with a pair of sunglasses that I bought for my friend for his birthday. Unfortunately, they did not fit the sunglasses because they are meant more for skinnier sunglasses. However, the return process was great! They allowed me to keep the item and refunded my money - this allowed me to avoid the hassle of shipping it back! Overall, though I was upset the product didn't fit, the service was outstanding.I bought this Chums float based on good reviews here and from a friend that travels frequently. I found that the strap on the Chums Eyewear Retainer was too short to wear with my wide brimmed hat. When ever I move my head, the hat brim behind my head would push the Chums strap which then pushed my glasses around on my face. This was very annoying and of course given a choice between the hat and the Chums strap, well the Chums ended up at the bottom of my duffle for the majority of my rafting trip. If the Chums strap hung longer down my back, or maybe even closer on my head, then I think it would have worked out. I'll be asking for a refund.Don't dive in or instant releaseI thought I was ordering the YELLOW retainer, however it defaulted to black. Also, when you pick the color, even the black option shows the yellow retainer ... which makes you believe you are getting the yellow one. Anyway, I would have sent it back but was leaving the country the next day and didn't have time. I'm a little disappointed as this black retainer is going to be very difficult to spot in our murky lake. :-( If the seller reads their reviews: I suggest you correct the color options so that the black option shows a black retainer and the yellow option shows the yellow retainer.The entrance is exactly the same size as the smaller version. if the normal size does not fit your glasses this will not too.I bought these for a fishing trip. Figured I’d try to prevent losing expensive sunglasses. They are completely useless. The ends where you insert the arms of your sunglasses are not tight and have no rubber or material that keep the arms inserted. Also the foam is thick so it makes the arms too big to fit on your ears after you insert them. I ended up tossing them. I would NOT recommend. Good idea but a bad design.Was worried it might not fit the thicker than normal ends of my glasses but it fit no problemI bought this for my husband, he said it is a little bulky on the ears (thus only 4 stars) but it floats very well.It isn't comfortable when wearing a hat, the fabric is too bulky and the float pops up the brim on my hat. Easy to attach and detach.will keep your sunglasses from sinking if you lose while on waterFast shipping. Product works as described. I would order another.Decent product but it arrived late.Didn't even last for one wave. Expensive prescription sunglasses gone.