Compatible With All Wide Mouth Bottles Straw Is Easy To Trim To Fit Your Favorite Hydro Flask Flex Strap Is Easy To Transport And Comfortable To Carry Honeycomb Insulated Cap For Maximum Temperature Retention Leakproof When Closed So You Can Reliably Sip And Transport Your Refreshment Without Worry Bpa-Free & Toxin-Free Removable Components For Easy Cleaning Dishwasher Safe Flex Straw Cap Not Intended For Use With Hot Liquids.