Leak Proof: These 1oz portable water bottle meets our daily needs. It features a three-layer leak-proof design, equipped with a stable flip cover and an internal stopper, which can effectively prevent liquid from leaking. Quality Silicone: Made from soft silicone that's safe for toiletries and food.Easy to squeeze and completely empties without waste. Easy to Use:Large opening makes filling and cleaning simple.Compact size fits in pockets and carry ons. Multi Purpose Use: Perfect for shampoo conditioner lotion body wash. Also great for condiments like ketchup salad dressing and sauces. Complete Travel Set: Includes 4 bottles and transparent carrying bag. Ideal for gym vacations camping business trips and daily use. Product description How to Use Step One Don't overfill the bottle,fill to 80-90% capacity. Before capping,ensure the silicone seal fully fits the bottle rim Step Two After tightening the cap,gently press to release the desired amount of liquid Step Three Before screwing the cap on,squeeze out any air to prevent leakage Step Four Finally,to prevent the cap from accidentally opening in your bag,fasten the silicone strap.An extra layer of security Is this bottle leak-proof? Triple leak-proof protection:Screw-top bottle opening,internal stopper design,silicone strap.Delivering enhanced leak-proof functionality What material is this product made of? This product is crafted from food-grade silicone and is suitable for the daily storage of condiments.