double walled sport flask
material : 304S/S inside , 201S/S outside; plastic lid with food grade silicone seal ring; metal hook.
capacity :500ml , 750ml.
customization : color,logo,pattern,packaging.
Wholesale price double-walled sport flask
It designed with drinking mouth and climbing hook, a perfect sport flask.
This sport flask shouldn’t be used for hot water; it is for cold water or warm water (less than 45°C).
A suction nozzle is dangerous for hot water.