# Hydro Flask HF-Butelka 21oz Standard Mouth FlexStraw Cap Birch — 621 ml, Standard Mouth, FlexStraw lid

**URL:** https://aio.lv/en/product--hydro-flask-s21cfs035--11906512
**Data updated:** 2026-03-10 00:46 (EET)
**Category:** Sports Bottles
**Manufacturer:** Hydro Flask
**Manufacturer code:** S21CFS035
**EAN:** 840394202310
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 45.99 €
**Prices and availability valid until:** 2026-07-24 23:59
**Price without VAT (21%):** 38.01 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hydro-flask-s21cfs035--11906512

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.89 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

Hydro Flask HF-Butelka 21oz Standard Mouth FlexStraw Cap Birch is a 21-ounce (≈621 ml) reusable water bottle with a standard mouth opening and a FlexStraw cap for easy sipping. Designed for everyday hydration, it suits workouts, commuting and outdoor activities. Constructed for durable daily use and compatible with standard-mouth accessories.

## Long description

The Hydro Flask HF-Butelka 21oz Standard Mouth with FlexStraw Cap in Birch is a 21-ounce (approximately 621 ml) reusable water bottle designed for everyday hydration. It features a standard mouth opening and a FlexStraw lid that allows easy, one-handed sipping. Constructed to withstand regular use, the bottle is suitable for workouts, commuting and outdoor activities and is compatible with other standard-mouth accessories.
Advantages
The bottle combines a lightweight profile with durable construction and a spill-resistant FlexStraw cap for convenient drinking on the move. Its standard mouth size balances ease of filling and cleaning with compatibility for a range of standard-mouth lids and accessories. The 621 ml capacity provides a practical volume for daily use without adding excessive bulk.
Suitable for
 Gym and fitness sessions
 Daily commuting and office use
 Hiking, cycling and outdoor activities
 School and campus use
 Travel and short trips
Key specifications
 Capacity: approximately 621 ml (21 oz)
 Mouth type: standard mouth
 Lid type: FlexStraw cap for sip-through use
 Material: reusable bottle designed for regular daily use
 Colour: Birch
How to use
Fill the bottle with cold or room-temperature beverages and secure the FlexStraw cap before use. Use the straw mechanism to sip without tilting the bottle; ensure the cap is fully closed when carrying to reduce the risk of spills. For cleaning, remove the cap and straw components as needed and wash by hand or follow manufacturer care instructions for safe maintenance.
Usage recommendations
To maintain performance and hygiene, rinse the bottle and disassemble the FlexStraw cap regularly. Avoid filling with boiling liquids and do not freeze the bottle while full. Use compatible standard-mouth accessories when replacing lids or adding filters.

## FAQ

### How much does the Hydro Flask HF-Butelka 21oz Standard Mouth FlexStraw cost, and is it available for purchase?

The price is 45.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 9 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 14.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Hydro Flask products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Hydro Flask service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11906512/67337130_large.webp