SAFETY & HEALTH MATERIAL: Food grade silicone, non toxic and BPA – Free, approved by FDA in US as well as LFGB in Germany.
HEAT-AND-COLD RESISTANCE: Can withstand -60 to 230 degree, handles any hot or cold drinks.
LARGE CAPACITY & FOLDABLE: Can store up to 750ml water, which enough for short-time outdoor activities; after drinking off, it can be folded to a small size.
HUMANIZATION DESIGN: Leak proof and anti-collision design, soft but durable, you never worry that it will break by falling down when you do sports.
EASY TO CLEAN: Oil / corrosion / microwave radiation resistance; clean with soft bottle brushes or rub the bottle with hands and rinse with water.