【Good Universality】 Compatible with Hydro Flask Standard Mouth (18/21/24 oz), Simple Modern Ascent Water Bottle (12/17/20/24/32/64 oz), The Coldest Water Standard Mouth (21 oz), Klean Kanteen Classic Bottle (12/18/27/40/64 oz) 【New Design】 New improved design: 2-finger grip with Soft rubber pad. More comfortable to carry. Leak-proof and spill-proof. 【Material】 US Patent Product. Made of high quality materials. All are BPA and Toxin-free, safe for adults and kids. 【Package Content】 2 lid, 4 straws and 2 straw brushes. Straws need to be trimmed to fit different bottles. Wash before use. 【Satisfaction Guaranteed】 If our lid does not fit the bottle mentioned, contact us and our After-sales Service Team will help you deal with it.