Bungee Eyewear Retainerby Beta-SimplicityPrevents glasses / sunglasses from sliding or dropping offRecommended for sports use or active childrenStretchable to fit different types of eyewear temple sizesAdjustable tightness, suitable for all agesIndications• For athletes or sports use e.g cycling, jogging, water sports• Recommended for active childrenInstructions:Slide connector sleeve of bungee over eyewear temple. (Trim to length if necessary.)For larger temple, insert connector sleeve about 2 cm into the temple tip.When wearing eyewear, stretch bungee chain and release behind your head.Recommended to wash after useReplace if torn or worn outDetails credit: Beta-Simplicityhttps://www.youtube.com/watch?time_continue=70!#!amp!*!v=s7GGRqmtnYA!#!amp!*!feature=emb_logoShipping:Singpost mail (non-registered): 3-7 working days*Courier (tracking): 2-5 working days**estimate