The Klean Kanteen Sports Cap 3.0 offers an option for drinking one-handed and on the go. The soft silicone spout and better valve mean you'll get impressive performance and leak resistance. It's interchangeable for all Klean Kanteen classic bottle sizes.Soft silicone spout and relief valve. Leak resistant and "chirp/whistle" free. 25% higher flow rate. Quick attachment loop. No BPA, phthalates, lead or other toxins. Interchangeable with all Klean Kanteen Classic sizes. Dishwasher safe. Wt. 1.5 oz. Size: 2.875"H x 2.5"W.