Hydro Flask 21oz Standard Flex Straw Cap Lupine
More hydration for more fun with our leakproof, Flex Straw Cap. Our 21 oz Standard Mouth with Flex Straw Cap is just the right size for staying hydrated before, during and after activity. Beverages stay cold for 24 hours. The Flex Straw Cap is leakproof and makes it easy to sip on the move.
More hydration for more fun with our leakproof, Flex Straw Cap. Our 21 oz Standard Mouth with Flex Straw Cap is just the right size for staying hydrated before, during and after activity. Beverages stay cold for 24 hours. The Flex Straw Cap is leakproof and makes it easy to sip on the move.
More hydration for more fun with our leakproof, Flex Straw Cap. Our 21 oz Standard Mouth with Flex Straw Cap is just the right size for staying hydrated before, during and after activity. Beverages stay cold for 24 hours. The Flex Straw Cap is leakproof and makes it easy to sip on the move.
More hydration for more fun with our leakproof, Flex Straw Cap. Our 21 oz Standard Mouth with Flex Straw Cap is just the right size for staying hydrated before, during and after activity. Beverages stay cold for 24 hours. The Flex Straw Cap is leakproof and makes it easy to sip on the move.
in 14 offers
The lowest price for Hydro Flask 21oz Standard Flex Straw Cap Lupine right now is $43.96 at Natural Necessity Surf Shop, compared across 13 retailers.
The all-time low was $20.40 on 17 July 2025 — today's price is 115% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 5 Nov 2026.
Last updated at 05/11/2026 23:42:14
Hydration 21oz (620ml) Standard, Lupine / 621ml
21oz Standard Flex Straw Cap Lupine
Delivery $12.50
Hydro Flask 21oz Standard Flex Cap Lupine TempShield BPA-Free Stainless Steel
Delivery between 8–16 Nov $10
Hydro Flask - 21oz STD Mouth Bottle Straw Lid Lupine
Delivery $14.90
Hydro Flask Hydration 21oz Standard Mouth Flex Straw Cap Insulated Water Bottle - Lupine | Surf Accessories
21OZ STANDARD MOUTH - FLEX STRAW CAP, 21OZ/621ML / LUPINE
Free delivery
Hydro Flask Standard Flex Straw Cap Water Bottle TempShield Insulated Leakproof 21oz Lupine - Purple
Delivery between 9–13 Nov $9.50
Hydro Flask 21oz Standard Flex Straw Cap Lupine TempShield Water Bottle
Free delivery between Sat – Tue
Hydro Flask 21oz Standard Flex Straw Cap Lupine TempShield Water Bottle
Delivery $9.95
Hydro Flask 21oz Standard Flex Straw Cap Lupine TempShield Water Bottle
Delivery $9.95
| Volume | 21 oz - 621 ml |
| Mouth Diameter | 1.91" - 4.8 cm |
| Diameter | 2.87" - 7.2 cm |
Hydration 21oz (620ml) Standard, Lupine / 621ml
21oz Standard Flex Straw Cap Lupine
Delivery $12.50
Hydro Flask 21oz Standard Flex Cap Lupine TempShield BPA-Free Stainless Steel
Delivery between 8–16 Nov $10
Hydro Flask - 21oz STD Mouth Bottle Straw Lid Lupine
Delivery $14.90
Hydro Flask Hydration 21oz Standard Mouth Flex Straw Cap Insulated Water Bottle - Lupine | Surf Accessories
| Volume | 21 oz - 621 ml |
| Mouth Diameter | 1.91" - 4.8 cm |
| Diameter | 2.87" - 7.2 cm |
