- 25% lighter than the original 21 fl. oz. Hydro Flask standard-mouth bottle, thanks to thinner 18/8 pro-grade stainless-steel walls
- Tapered walls are thinner up top to save weight, and thicker on the bottom for durability
- Standard mouth opening is ideal for quick sips on the trail; plus, the slim bottle profile stashes easily into a pack pocket
- Honeycomb-insulated standard-mouth cap is leakproof and features a flexible perforated strap and aluminum pivots to cut weight
- TempShield® double-wall vacuum insulation keeps beverages cold for up to 24 hrs. and hot up to 12 hrs.
- Free of BPA and phthalates
- Best Use-Multisport
- Liquid Capacity (L)-0.6 liters
- Liquid Capacity (fl. oz.)-21 fluid ounce
- Dimensions-2.8 x 10.2 inches
- Fits In Cup Holder-Yes
- Water Bottle Material-Stainless Steel
- Material(s)-Stainless steel
- BPA Free-Yes
- Bottle Opening-Medium
- Cap Type-Screw Cap
- Weight-9.6 ounces
21oz Lightweight Standard Flex Cap Slate
UK Standard Delivery
- UK Standard Delivery is Free for orders over £30
- UK Standard Delivery is £1.99 for orders under £30
UK Next Day Delivery
- The cost of Next Day Delivery is £4.99
- If you order by 2pm, you will receive your order the next working day
- If you order anytime at the weekend, you will receive your goods on the following Tuesday.
- Next Day Delivery is not available to the following: Ireland and the Scottish Highlands
- Free UK returns within 30 days of purchase
Please alert me via email when this product is back in stock.
Chest sizing varies widely depending on the garment, brand or range. Instead we have outlined below a few of the main types of fit found in our ranges and how they compare.
All of our women's clothing is shown in UK sizes but many of our brands use US sizing too, for reference we have included a rough conversion.
All of our footwear is shown in UK sizes but some of our brands do also use European and US sizing. Converting from UK to European sizing is not exact and varies between brands. The table below is a rough guide only. If in doubt, contact us.