I purchased this flotation device for my eyeglasses which are a little heavier than your typical sunglasses. I chose the extreme model because of its excellent visibility and more than sufficient float-ability. The price was fair the shipping was quick and the quality in materials is high. The flotation device has an adjustable band and hangs comfortably around the neck as well, high enough as not to be in the way of your hands. I would recommend for water skiing high speed boating windsurfing etc. When ever water is there, so should be your heavyglare!