Premium 550ml double-walled stainless steel construction ensures 12-hour temperature retention for both hot and cold beverages

Advanced vacuum insulation technology prevents condensation and maintains safe exterior temperature

Durable food-grade 304 stainless steel interior resists odors, stains, and corrosion for long-term use

Ergonomic push-button lid with secure lock mechanism designed for small hands and spill-proof performance

Lightweight yet rugged outer shell withstands daily drops and bumps in school or sports environments

Non-toxic, BPA-free materials meet international safety standards for children"s products

Wide mouth opening accommodates ice cubes and allows easy cleaning with standard bottle brushes

Versatile usage for classroom hydration, sports activities, camping trips, and family outings

Stylish colorful exterior with scratch-resistant coating maintains aesthetic appeal over time

Compact dimension fits standard backpack pockets and car cup holders for on-the-go convenience