Silicone folding water bottle, 50% space-saving when folded, lightweight for travel. Made of food-grade platinum silicone, the raw material is SGS tested and meets environmental standards, is reusable, easy to clean, and environmentally friendly. The bottle can be used for a wide range of purposes: sports, travel, home, and office. Large diameter bottle opening, easy to fill with ice and other accessories. Silicone carries a strap, is easy to take away by hooking your hand, and prevents the cap from getting lost. The spout is smooth and rounded for smooth drinking. Thickened bottle bottom with its own capacity marker and thickened design for stability. PMS color code custom colors are available, your product logo can be provided, screen printing is supported, laser engraving is used, etc. Measuring 7.17*3.35 inches (3.74 inches), this custom 21oz outdoor sports silicone folding water bottle. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Customization: Logo printing available with multiple packaging and color options. Product Highlights: BPA-free, leak-proof, travel-friendly.