This is a collapsible cup. It's a great item that you can carry anywhere and use anytime. Perfect for outdoor activities like camping, fishing, and travel. Material: Stainless steel Size when folded: 6.5 x 6.5 x 3 cm Height when unfolded: 7 cm Weight: 8.3g *This product is an outlet item. The locking mechanism may be loose. Please be careful when using it.