??100% Leak Proof?: Our Water Bottles Come With Straw Lids That Offer A Tight Seal. After Use, Just Cover The Straw To Block Any Unwanted Substances. These Bottles Are Fully Leakproof, Making Them Ideal For Packing In Your Backpack. | | ??18/10 Premium Stainless Steel?: Constructed From Premium 18/10 Stainless Steel, This Bottle Is Bpa-Free And DoesnT Affect The Flavor Of Your Drinks. Its Double-Wall Design Helps Keep Drinks Cold For Up To 12 Hours And Hot For Up To 6 Hours (Based On Usage). | | ??Fashionable Healthy Design?: Designed To Complement Any Lifestyle, This Tumbler Is Perfect For Everyday Use Whether At Home, In The Office, Or On The Go. It'S Great For Sports, Travel, And CampingAnd Makes An Excellent Gift For Anyone, From Teachers To Professionals. | | ??Non-Slip And Portable?: With Its Silicone Grip And Attached Strap, This Bottle Provides A Firm, Slip-Resistant Hold And Is Portable Enough To Take With You On Any Adventure. | | ??Cup Holder Friendly?: W.