21oz Foldable Silicone Bottle push in your next advertising campaign!This handsome foldable silicone bottle has a collapsible design that’s easy to bring along. Fill it up with 21 ounces of your favorite beverage and fold it up as you drink. The attached cord controls the size of the bottle, making it the smallest size possible – taking up less room in your pack. Select from five great shades and add your school, sports team, organizational or company logo or message through our signature silkscreen method to customize. Soft, durable and safe for use by children. This custom 21oz foldable silicone 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.