DOUBLE WALL VACUUM INSULATION:vacuum insulation technology for maximum temperature retention, hot or cold, keeps liquids for hours | TEA LEAF STRAINER TEA BOTTLE: for brewing loose leaf teas Or use just for travel coffee mug water bottle | SPILL PROOF LID: toss in your backpack for easy traveling, commuter, on the go. | FOOD GRADE MATERIAL: durable 18/8 stainless steel interior & exterior,BPA-free plastic lid, SGS certified silicone gasket and stable silicone base | MATTE FINISH for better grip