One of the easiest sports tops to use on SIGG bottles. Leak-proof and no need to apply pressure when drinking. Just tip and sip. Twist to lock or unlock and pull to open. Made from 100% food-safe polypropylene. Available in Black. One of the simplest sports tops to use on SIGG bottles Leak-proof in two positions; Fits all sizes of SIGG reusable bottles; Perfect for sports activities and easy drinking on the go; BPA-free and made from 100% food safe polypropylene; SIGG Sports Tops f...