Glow Stretchy Sleeves Set 2 super-stretchy glow-in-the-dark sleeves with sensuous ridges and nodules. Use on penis or vibrator. Made using phthalate free, non-toxic materials Thermoplastic Rubber TPR. Thermoplastic Rubber TPR is a class of polymers, the characteristics of which mimic many of those of Silicone hygienic, soft, pliable, durable, non-porous. Safe and pure phthalate free as well as recyclable. A water based lubricant is recommended. Always clean before and after use. Each sleeve measures 6 inches long by 1.5 inches wide. Penis extension, French Tickler, vibrator sleeve. Glow Stretchy Sleeves Set 2 is a registered trademark for California Exotic Novelties.