WHY PURA? Pura focuses on safety, durability, ease of use, and eco-progressive consumption. Our revolutionary design not only eliminates plastic components but provides much-improved functionality. ZERO PLASTIC, ZERO YUCK: 100% plastic-free nipple or spout silicone travel covers crafted from medical-grade silicone. Dishwasher safe and will not leach toxins like plastic bottles and lids because our products do not contain any plastic! COVERS & PROTECTS: Covers & protects Kiki Natural Vent Nipples, Kiki Silicone Straw, and Kiki XL Sipper Spouts while on the go. SECURE FIT PREVENT LEAKING: All other nipple covers are plastic and easily fall off in one's bag. Our design is secure even when jostled about! REPURPOSE-ABLE: Also in accordance with re-purposing philosophy, the travel caver can also be used as a plastic-free snack cup for toddlers in a stroller, pram or car seat!