SWIM is a universal helper for all types of glasses which are designed for active sport. Thanks to this strap the glasses will not fall down from your head any more, but they will hang on your neck. This strap is floating so even in case of careless manipulation you do not need to worry about losing you sun or dioptric glasses. Delphin SWIM is soft, very comfortable for wearing and thanks to adjustable connectors will fit faultlessly to all types of glasses.