Premium MaterialThese drinking straws are made of premium, silver-colored stainless steel.Unlike other cheap straws that look a little yellow with thin wall thickness and low weight, the wall thickness of our straws is 215*6mm. They are very strong, not too heavy or too light.7 PCS.High Quality PolishingWith our polishing technique, the surface of our straws are well polished, very smooth for your lips and hands to touch and it is easier to get the silicone caps on/off than other metallic staws. Our metal straws have smooth rounded edges at each tip,they won't cut your lips or gums by accident even without the silicone sleeves.Safe to Use and Environmentally FriendlyThese sustainable straws and the covers are made of food grade stainless steel and silicone,no metal aftertaste, BPA free,lead free, non plastic,non toxic.They are extremely durable,dishwasher safe,washable,rust and scratch proof. One stainless steel straw can last for years and replace hundreds of plastic straws for you.These tall straws are perfect for drinking cold bevarage,cocktail,coffee,iced tea,soda or any other liquid drinks.