Sichuan Locust Stainless Steel Vacuum Flask Gift Set is crafted from food-grade 18/8 stainless steel with double-wall vacuum insulation, locking drinks hot and cold for long hours. Available in 500ml & 750ml dual capacities, it features a cup-style lid design, matching drinking mug, leak-proof sealing structure and fully BPA-free safe raw materials. We support custom Pantone body colors, laser brand logo printing and personalized gift box packaging, ideal for bulk corporate gift orders, holiday presents, household daily use and business souvenir supplies.