Hydroflask standard mouth flex straw cap
Woman drinking from hydroflask flex straw cap

Hydro Flask Standard Mouth Flex Straw Cap

Regular price £12.00 Sale price£9.00 Save £3.00

This product is no longer in stock.  We do stock the Hydro Flask with sip lid.

- Standard Mouth Flex Straw Cap fits all Hydro Flask Standard Mouth Bottles
- 2 straws included
- Flex Strap allows bottle to be easily carried
- Insulated Honeycomb™ cap retains drinks temperature
- Leakproof when shut
- BPA-Free & Toxin-Free
- Easy cleaning with removable pieces

Care advice
- Dishwasher safe, or use our Straw & Lid Cleaning Set
- Not to be used with hot liquid or fizzy drinks

Hydro Flask are based in Oregon USA. Hydro Flask created a charitable programme Parks For All, to benefit public green spaces and promote happier, healthier lives outdoors for all. To date, they have supported more than 122 non-profits and donated
over £1.3 million and counting.

Postage is FREE for orders £30 and over.

Orders under £30 cost £3.95.

Our standard UK delivery service uses Royal Mail Tracked 48 (2-3 working days).

In a hurry? Place an order by 1pm for Next Day* Special Delivery with the Royal Mail for £6.95.

*some post code exclusions apply

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Customer Reviews

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Kind words from our customers


What I really wanted to say was how impressed I am that the whole package is plastic free, really great to see and wish more would follow your lead.


Excellent! Many thanks Lou. Excellent customer service on your part👍. Will definitely be recommending Sea & Stream to my friends and family 👍😊


I couldn’t love my new swimming costume more!!! Such an incentive to take the plunge ! And such cute packing 💕

I’ll be back!

1% for the Planet

We are members of 1% for the Planet and give back 1% of every purchase that you make to environmental organisations.

A bit about us

It started with a swim.

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