KEEP YOUR EYEWEAR IN PLACE WITH THE CHUMS ELASTIC SMALL END RETAINER. This elastic retainer, made from a stretchy cotton/lycra blend, will keep your glasses in place when you're occupied with other activities. The ultra-thin design means you won't have to deal with bulk, adn the molded slider is adjustable, giving you a personalized fit. Keep your eyewear securely and comfortably in place with the Chums Elastic Small End Retainer. FEATURESUltra thin designMolded sliderTECH SPECSLycra/cotton stretchy blend