Premium 30oz Flip Straw Vacuum Flask – Bulk Sublimation Blank Tumbler (25pcs/Case)
High-grade 18/8 stainless steel construction ensures durability and superior temperature retention for both hot (12hrs) and cold (24hrs) beverages. Double-wall vacuum insulation with copper plating maximizes thermal efficiency, preventing condensation and maintaining drink integrity. Food-grade flip straw lid features one-touch open/close mechanism, leakproof silicone seals, and ergonomic sip angles for on-the-go convenience. Smooth sublimation-ready surface (100% BPA-free coating) supports high-definition custom prints – ideal for branding, events, or retail resale. Commercial-grade bulk packaging (25 units/case) optimizes logistics for gyms, cafes, corporate gifts, or wholesale distributors. Laser-welded base and reinforced thread neck guarantee drop resistance (3ft impact tested) and long-term leakproof performance. Weight-optimized design (430g) balances portability with capacity – perfect for hiking, office commutes, or outdoor sports.