Vacuum Insulation and Nice SizeDesigned with double walled vacuum insulation, featuring superior insulation and a condensation-proof design. Volhoply Water bottle can keep hot for 12 hours and keep cold for 18 hours, allowing you to enjoy your favorite flavor in the long run. The cups fit on the car and bike cup holder and inside the backpackfor your hiking, biking, beach, camping and fitness Lid with Wide HandleAfter market research, we redesigned this cup lid. 1. The thickened version of the waterproof rubber ring is used to make the seal more secure. 2. Our lids handle have been improved.Able to hold three fingers, relieve finger pressure while walking. 3. The straw is made of soft PP material to ensure that it will not break after long term use Multi Pack and Color OptionsWe provide a variety of fashion color for your choice. At the same time, we provide packages of 2 packs, 4 packs and 8 packs. Let you one purchase to meet the needs of the whole family Premium Materi