no worry about the loss

and the internal heating parts are made of spandex

Storage pocket for cord

Extended silicone nose pads to help stay in place on small bridges

88"W x 90"L

NEW Vision Training Tool Visual Convergence Training Tool Front Sight Correction Sight Focusing Training Vision Correction Tool pants no worry about the lossNEW Vision Training Tool Visual Convergence Training Tool Front Sight Correction Sight Focusing Training Vision Correction Tool Helps improve convergence insufficiency and strength sight focusing. Effectively promote convergence to corrects weak sight and strabismus. Light weight and compact size is easy to use and carry outdoor. Professional visual function correction training equipment. Made of quality beads and line, durable and convenient to use.