SILVA 500 mL gray soft flask with its standard bite nozzle.
SILVA 500 mL gray soft flask with its standard bite nozzle.
SILVA 250 mL gray soft flask with its compact body and standard bite nozzle.
SILVA 250 mL gray soft flask with its compact body and standard bite nozzle.
SILVA 500 mL gray soft flask with its long clear straw.
SILVA 500 mL gray soft flask with its long clear straw.
Gray 500 mL soft flask seated in the front pocket of a black running vest during a woodland trail walk.
Gray 500 mL soft flask seated in the front pocket of a black running vest during a woodland trail walk.
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SILVA 500 mL gray soft flask with its standard bite nozzle.
SILVA 250 mL gray soft flask with its compact body and standard bite nozzle.
SILVA 500 mL gray soft flask with its long clear straw.
Gray 500 mL soft flask seated in the front pocket of a black running vest during a woodland trail walk.

SILVA

Soft Flasks

Price
$19.99

The short version

Details & specs
Capacity
250 mL or 500 mL
Color
Gray

Capacity: 500 mL

Mouthpiece: Standard

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Return Policy

Eligible return or exchange requests must be submitted within 45 days of the order date. Items must be new and unused with original packaging, tags, and accessories. General change-of-mind returns are not accepted. Customers cover return shipping for size exchanges; Alpine Extreme covers approved returns caused by an incorrect, damaged, or defective item. See the full Return & Refund Policy for exclusions and refund timing.

Shipping

Free standard shipping is available to most addresses worldwide. Availability, delivery estimates, and any expedited charges depend on the destination and order. International customers are responsible for applicable duties, tariffs, or customs fees.

SILVA 500 mL gray soft flask with its standard bite nozzle.

Soft Flasks

Capacity: 500 mL Mouthpiece: Standard

$19.99

Water within reach on the run

Gray 500 mL soft flask seated in the front pocket of a black running vest during a woodland trail walk.

In the field

Carry water in the front of your SILVA running vest. Choose a 250 mL or 500 mL flask with the standard nozzle, or the 500 mL version with a straw. The soft body and wide cap keep it simple to carry and refill.

Choose your mouthpiece

The standard versions have a high-flow nozzle. The 500 mL straw version brings the bite tip higher.

Made for SILVA vests

Designed for the front compartments of Strive Fly, Strive 5 and Strive 10 vests. Vest straps help keep the flasks in place.

Flask details

Capacity choices
250 mL or 500 mL.
Mouthpiece choices
Standard high-flow nozzle; a 500 mL version with straw.
Color
Gray.
Vest compatibility
Designed for the front compartments of SILVA Strive Fly, Strive 5 and Strive 10 vests.
Construction
Soft, lightweight body with a wide cap for refilling.
Materials statement
BPA, PVC and phthalate free.

FAQ

How can I reach Alpine Extreme if I have questions?

Email [email protected] or use our contact form.

Do you offer free shipping?

Free standard shipping is available to most addresses worldwide. Availability, delivery estimates, and any expedited charges depend on the destination and order. International duties, tariffs, and customs fees remain the customer’s responsibility. See our Shipping Policy for details.

What's the return policy at Alpine Extreme?

Eligible return or exchange requests must be submitted within 45 days of the order date. Items must be new and unused with original packaging, tags, and accessories. General change-of-mind returns are not accepted. Return-shipping responsibility depends on the reason for the return. See the full Return & Refund Policy for exclusions and refund timing.

How long will it take for my order to arrive?

Orders are typically processed within 2–5 business days. Most standard shipments arrive within 7–14 business days after shipping, depending on destination and carrier conditions. Delivery estimates are not guaranteed.

Can I track my order?

Yes. Tracking details are emailed after shipment. You can also check order status with your order information through our order-tracking page.

What if there's an issue with my order?

Email [email protected] or submit the form on our support page. Report delivery issues within 60 days of the order date so carrier information is still available.