Heaven's Lost Property # Astraea - Coffee Mug Plastic No Spill Stainless Steel Inner Travel Tumbler Mug with Flip Lid 420ml Holds 420ml of Your Favorite Beverage Secure Lid to Prevent Spills, Insulated to Retain Temperature Material: Silicone Lid, Stainless Steel Inner, PP Mug It is durable. Dimensions: 7.4cm x 6.5cm x 19.5cm