Durable Double-Wall Stainless Steel Flask with Easy-Clean Seamless Inner Liner

Durable Double-Wall Stainless Steel Flask with Easy-Clean Seamless Inner Liner. One-click pop-open lid, easy to close with gentle press, smooth one-handed operation for convenient daily use. Hidden retractable straw keeps out dust and dirt, solving hygiene concerns for cleaner drinking. 304 stainless steel seamless inner liner, one-piece stretching process, easy to clean with no residue, excellent heat and cold retention. Food-grade Tritan one-piece molded lid with smooth interior, no dead corners for effortless cleaning. Ergonomic comfortable handle, easy to grip without fatigue even after long-time holding. All-around sealed leakproof design, no spilling even when inverted, worry-free portability. 70mm standard base diameter, fits most car cup holders for convenient driving use. Silicone non-slip silent base pad reduces noise and scratches, stable placement and enhances temperature retention. All materials pass professional tests, BPA free, eco-friendly and safe, certified by US FDA. Support customization of colors, packaging and logos; product owns invention patent, utility model patent and design patent with genuine quality guarantee.