Stainless steel pet bottle holder with a highly insulated double-wall vacuum construction. Simply insert a cold pet bottle to keep it cold for a long time. Compatible with 500ml to 650ml size pet bottles. Features a foldable handle for convenient carrying. 【Brand】BOTTLE IN BOTTLE 【Product Name】Bottle in Bottle 【Model Number】ABIB-E 【Colors】BK: Black / IV: Ivory / GY: Gray / PB: Pink Beige / BB: Baby Blue 【Capacity (approx.)】Compatible with 500ml to 650ml size pet bottles 【Size (approx.)】Width 88 x Depth 96 x Height 176mm 【Inner Diameter (approx.)】Φ71mm 【Weight (approx.)】260g 【Materials】 Inner bottle/Mouth: Stainless steel Body: Stainless steel (polyester resin coating) Lid: Polypropylene Packing: Thermoplastic elastomer *May not be usable depending on the shape of the pet bottle.