# VELLYN > The world's lightest sports water bottle. VELLYN designs ultra-lightweight running and hydration gear for athletes and active people. Our flagship 500 ml collapsible bottle weighs just 29 grams, and our Performance Running Vest System carries hydration, lights, and essentials without slowing you down. ## Product: VELLYN Twin Pack — 2 x Ultra-Light Collapsible Bottles - Weight: 29 g (lightest 500 ml bottle available) - Capacity: 500 ml / 17 fl oz - Collapsible: folds to 6 cm × 4 cm when empty - Full dimensions: 27 cm × 9 cm - BPA & phthalate free - Leak-proof seal - Quick-grip outer shell - Transparent volume window - Not dishwasher safe - Suitable for cold/room-temperature liquids (max 50 °C / 120 °F) - Fully recyclable - URL: https://www.vellyn.co.uk/product/vellyn-twin-pack-2x-500ml ## Product: VELLYN Performance Running Vest System - Unisex, one-size adjustable fit (chest 28" – 46") - Lightweight, bounce-free design built to sit close to the body - Includes 300 ml collapsible soft flask for on-the-go hydration - 2 rechargeable clip-on chest lights with multiple LED modes - Reflective detailing for low-light visibility - 6 secure storage pockets, including waterproof phone pocket - Price: £26.99 (RRP £36.99) - URL: https://www.vellyn.co.uk/product/performance-running-vest ## Links - Homepage: https://www.vellyn.co.uk - Delivery: https://www.vellyn.co.uk/delivery - Returns: https://www.vellyn.co.uk/returns - Contact: https://www.vellyn.co.uk/contact - Privacy Policy: https://www.vellyn.co.uk/privacy - Terms & Conditions: https://www.vellyn.co.uk/terms ## Social - Instagram: https://www.instagram.com/vellyn_uk - TikTok: https://www.tiktok.com/@vellyn_uk - X / Twitter: https://x.com/vellyn_uk ## FAQ Q: How much does it weigh? A: 29 grams when empty — the lightest 500 ml bottle available. Q: What is the capacity? A: 500 ml / 17 fl oz. Q: What are the dimensions? A: 27 cm × 9 cm full; collapses to 6 cm × 4 cm. Q: Is it dishwasher safe? A: No. Hand wash only. Q: Can I use any liquid? A: Water, energy drinks, and supplements are fine. Not suitable for hot liquids above 50 °C / 120 °F. Q: Can I recycle it? A: Yes, it is fully recyclable. Check local guidelines. Q: Does the running vest fit all body types? A: Yes. It is a unisex, one-size design that adjusts to fit chest sizes from 28" to 46". Q: What's included with the running vest? A: The vest, a 300 ml collapsible soft flask, and 2 rechargeable clip-on LED chest lights. ## Extended Info For more detail, see: https://www.vellyn.co.uk/llms-full.txt