The Siliskin Sippy Cup is 100% silicone with an embedded stainless steel ring to keep it from collapsing when squeezed. The cup comes with a universal silicone​ sippy top that fits over any size cup. The spout is also free of intricate valves allowing for easy cleaning and easier use. Perfect for on-the-go, tabletop, indoor and outdoor use. 

Product Details:
• Dishwasher and Microwave Safe
• 100% Silicone and Stainless Steel
• Silicone cup that holds it's shape, no collapsing mouth
• Silicone top stretches over cups of multiple sizes
• Can be boiled to sterilize
• No more messy spills
• Perfect for home and travel