Adjustable Glasses Strap - Upgrade 4 Pack No Tail Eyeglass Straps, Universal Fit Rope Eyewear Retainer, Sport Unisex Sunglass Retainer Holder Strap (Black,13 inch) Black 2 hidden It improves the tire life

It improves the tire life cycle by 50% - EASY INSTALLATION: No tool required

1/4-Inch NPT

Water is not required

it has high elasticity and good adhesion

An ideal product for those with limited dexterity or the use of only one hand

Adjustable Glasses Strap - Upgrade 4 Pack No Tail Eyeglass Straps, Universal Fit Rope Eyewear Retainer, Sport Unisex Sunglass Retainer Holder Strap (Black,13 inch) Black 2 hidden It improves the tire lifeAdjustable Glasses Strap Upgrade 4 Pack No Tail Eyeglass Straps, Universal Fit Rope Eyewear Retainer, Sport Unisex Sunglass Retainer Holder Strap (Black,13 inch) Product Features 50% silione Made in the CN or Imported Tips There is a moveable cube toggle and a small ring on the cord, which allow the strap to be adjusted according to your head size and effectively prevents your glasses slipping down,can be easily adjusted according to your preference.