I opened it once, but I never used it. I purchased it for caregiving purposes. The handle can be attached to either side. ● Product Name: Easy-to-Drink Straw Cup ● Materials: Cap, Lid, Handle: Polypropylene 　　　　　　Mouthpiece, Straw, Packing: Silicone Rubber 　　　　　　Bottle: Saturated Polyester Resin ● Bottle Capacity: 380ml ● The top of the box is torn from opening. ● Instruction manual included. Please refrain from purchasing if you are concerned about fine dust or dirt. I cannot guarantee the quality. I will check the product before shipping. Please note that I cannot accept returns or exchanges after shipping. I will use recycled materials for shipping. Thank you for your understanding. Caregiving Supplies Straw