The silicone folding mug is made of food grade silicone, which is safer to use compared with plastic. The size after folding is 4 1/2" x 1 3/4", and the size before folding is 4 1/2" x 4 1/8". Great for traveling, fishing, exploring, daily walking, camping, cycling, hiking, running ,yoga, exercise and gym, welcome your logo.
