in 24 offers
The lowest price for Hydro Flask Standard Flex Straw Cap 21oz Bottle right now is $36.84 at Snowcountry.eu, compared across 16 retailers.
The all-time low was $27.45 on 23 Sept 2026 — today's price is 34% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 1 Nov 2026.
Hydro Flask Standard Flex Straw Cap 21oz Bottle
Last updated at 01/11/2026 12:45:01
Hydro Flask Water Bottle - Insulated Stainless Steel - Non Spill, Leakproof in 21 Oz Harbor Blue
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Hydro Flask 18oz / 532ml Standard Mouth - Water bottle
Delivery $94.10
Hydro Flask 18 oz Standard Flex Cap Harbour Blue
Delivery between Wed – Thu $4
Unisex Hydro Flask (621ml) Standard Flex Cap Water Bottle in Harbor Blue Size OS
Delivery $15
Hydro Flask - Water Bottles - 18 Oz Standard Flex Cap - Size One Size at The Iconic
Delivery between Mon – Tue $10.95
18 OZ Standard Flex Cap Harbor Blue
Delivery between Tue – Fri $10
18oz (532mL) Standard Mouth Flex Cap
Delivery between 4–12 Nov $10
Hydro Flask Standard Flex Cap Insulated Flask, 21oz (621ml) - Harbor Blue
Hydro Flask 24oz (710ml) Standard Mouth Bottle - Harbour Blue - One Size
Delivery between 6–10 Nov $46
Hydration 21 oz Flex Straw Cap, Harbor Blue
Delivery between 4–13 Nov $9.95
| Product Highlights | Insulated |
| Subtype | Insulated Water Bottle |
| Size | 21 oz |
| Material | Stainless Steel |
| Free Of | BPA-Free |
Hydro Flask Water Bottle - Insulated Stainless Steel - Non Spill, Leakproof in 21 Oz Harbor Blue
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Hydro Flask 18oz / 532ml Standard Mouth - Water bottle
Delivery $94.10
Hydro Flask 18 oz Standard Flex Cap Harbour Blue
Delivery between Wed – Thu $4
Unisex Hydro Flask (621ml) Standard Flex Cap Water Bottle in Harbor Blue Size OS
Delivery $15
Hydro Flask - Water Bottles - 18 Oz Standard Flex Cap - Size One Size at The Iconic
Delivery between Mon – Tue $10.95
| Product Highlights | Insulated |
| Subtype | Insulated Water Bottle |
| Size | 21 oz |
| Material | Stainless Steel |
| Free Of | BPA-Free |
