Straw lid with straws is a great choice of replacement lid for hydroflask standard mouth. Durable handle, easy to carry, no worry about dropping your hydroflask with straw lid standard mouth. : Super easy to open, while latching closed securely. Allows one-handed drinking, easily flip straw top and sip water from straw lid, perfect for indoor and outdoor sports, camping, hiking, etc. Wider finger loop is comfortable to carry your flasks anywhere. Popular water bottle lid accessories to meet daily hydration on the go. Straw lid fits Hydroflask standard mouth bottles (mouth diameter 1.91). This standard mouth straw lid also fits Simple Modern Ascent, the Coldest Water Standard Mouth, Klean Kanteen Classic Bottle.