Made from tough Tritan copolyester which does not retain flavours from previous drinks. The screw on plastic lid has a retaining loop that allows you to attach it to a buckle or backpack. DofE Recommended Kit which features on the DofE Expedition Kit ListDofE Recommended KitTritan copolyester - lightweight, durable, odourless and tasteless.High impact resistance - tough single walled construction.Screw-on plastic lid - with retaining loop.Translucent finish - with measuring markers.BPA (Bisphenol A) FreeCapacity: 1 litreDimensions: 80 x 80 x 180mmWeight: 110g