【Food Grade Material】The smoothie cups are made of food-grade silicone and PP material, they are not easy to deform or damage and have a long service life. The glasses are sealed and not easy to spill. This smoothie glass is washable and reusable (Note: not machine washable!). Just wash the glass and freeze it again to start your next smoothie adventure. It is perfect for both adults and children. 【Dual-use Straw】This magical frozen slushie comes with a spoon with a straw, straw and spoon 2 in 1, with a detachable design, can be used as a spoon or as a straw alone, meeting different needs, bringing you more convenience. 【Easy to Use】Step 1: Chill the mugs in the refrigerator for 4 to 6 hours (the time depends on the freezer level of the refrigerator). Step 2: Then pour in 2/3 of your favorite cold drink (cola, milk, juice, smoothie, soda, etc.). Step 3: Squeeze the glass for 3-5 minutes, stir gently occasionally and enjoy your delicious homemade smoothie. Perfect for camping, travel, parties and excursions. 【Usage Tips】Make sure the glass is completely frozen before preparing the smoothie. Do not touch the inside of the glass with sharp objects to avoid damaging it. Do not pour liquids hotter than 35 degrees into the glass and it should not be filled with hot water. 【Gift Ideas】Slush cups are the perfect gift for friends and family. There are no complicated steps, you just need to be creative and enjoy the manufacturing process. Perfect gift idea for Halloween, Thanksgiving, Christmas, birthday and New Year. Ice slush glasses are the perfect companion for summer pool and beach parties. Have fun with your friends and family with slush cups.