Premium 500ml stainless steel vacuum flask with double-walled insulation for 12-hour hot/cold retention

Military-grade 18/8 stainless steel interior, BPA-free, sweat-proof polished exterior finish

Patented one-touch flip lid with leakproof locking mechanism and ergonomic carry handle

Multi-functional design for travel, office, gym, hiking, and outdoor adventures

Commercial-grade durability withstands drops and impacts with reinforced base

Gift-ready set includes matching cleaning brush and premium packaging

Wholesale bulk pricing with direct factory sourcing and global logistics support