• 【Space-Saving Collapsible Design】Expands to 21.5cm for 500ml capacity and folds down to just 11.5cm, reducing volume by nearly half for easy packing in backpacks or luggage.

• 【Leak-Proof Iron Cap】Premium iron lid with excellent sealing performance prevents spills when inverted or shaken, ensuring worry-free transport in bags.

• 【Convenient Carabiner Clip】Built-in metal carabiner allows direct attachment to backpack straps or outdoor belts, keeping hands free during hiking, cycling, or camping activities.

• 【Food-Grade Silicone Construction】Heat and cold resistant silicone safely holds hot water, cold drinks, and fruit teas without releasing harmful substances or absorbing odors.

• 【Versatile Multi-Scene Usage】Perfect for mountain climbing, cycling, gym workouts, business travel, and home office use, with compact folded form fitting various storage spaces.

Specifications:

• Material: Iron + Food-Grade Silicone
• Capacity: 500ml (expanded), 300ml (folded)
• Dimensions: Expanded: 21.5 x 7cm, Folded: 11.5 x 7cm
• Temperature Resistance: High and low temperature resistant
• Features: Collapsible, Leak-proof, Carabiner Clip