INNER SELF 500ML Soft Flask in black — front view INNER SELF 500ML Soft Flask in black — back view INNER SELF 500ML Soft Flask in black — close-up
INNER SELF 500ML Soft Flask in black — front view INNER SELF 500ML Soft Flask in black — back view INNER SELF 500ML Soft Flask in black — close-up
INNER SELF 500ML Soft Flask in black — front view
INNER SELF 500ML Soft Flask in black — back view
INNER SELF 500ML Soft Flask in black — close-up
INNER SELF 500ML Soft Flask in black — front view
INNER SELF 500ML Soft Flask in black — back view
INNER SELF 500ML Soft Flask in black — close-up
INNER SELF 500ML Soft Flask in black — detail 1

500ML soft flask for hydration on the run. Flexible and lightweight design that packs flat when empty.

Pace_System
Built for daily training, steady efforts, and consistent mileage. Designed to balance comfort, storage, and durability across a wide range of conditions.

Product intensity

Product Intensity 3

[ Specs ]

[ 1 ] 500 mL Capacity

[ 2 ] Flexible, Lightweight Construction

[ 3 ] Packs Flat When Empty

INNER SELF 500ML Soft Flask in black — detail 1
INNER SELF 500ML Soft Flask in black — detail 1

500ML Soft Flask

$20.00 CAD
$20.00 CAD

Dark Grey

Size
[ 500 ML / 17 FL OZ ]
Free shipping $175+Free 30-day returns and exchanges

500ML soft flask for hydration on the run. Flexible and lightweight design that packs flat when empty.

Features

▪ 500 mL Capacity
▪ Flexible, Lightweight Construction
▪ Packs Flat When Empty

Materials & Care

▪ 100% Thermoplastic Polyurethane
▪ Wash with mild soap
▪ Max temp 60°C / 140°F

Product Version

1.0
Released — September 20, 2026

Orders are processed within 1–2 business days. You'll receive a tracking number by email as soon as your order ships.


DUTIES & TAXES
All duties, taxes, and VAT are included in the price at checkout for every international order. No surprises on delivery. Canadian orders are domestic — no duties apply. Standard taxes are calculated at checkout.


SHIPPING

CANADA
Express Shipping — 1–5 business days
Free on orders $175 CAD and over · $9.99 CAD under

UNITED STATES
Express Shipping — 4–7 business days
Free on orders $175 USD and over · $14.99 USD under
Duties and taxes included at checkout.

EUROPE
Express Shipping — 6–10 business days
Free on orders €175 and over · €14.99 under
VAT and import duties included at checkout. No additional charges on delivery.

ASIA
Express Shipping — 2–15 business days
Free on orders $175 USD and over · $14.99 USD under
All duties and taxes included.

OCEANIA
Express Shipping — 6–10 business days
Free on orders $200 USD and over · $14.99 USD under
All duties and taxes included.

REST OF WORLD
Express Shipping — 10–30 business days
Free on orders $200 USD and over · $14.99 USD under (North and South America: $19.99 USD)
All duties and taxes included.


RETURNS & EXCHANGES

We accept returns worldwide within 30 days of delivery. Items must be unworn, unwashed, and in original condition with all tags attached. Sale items are final sale. Socks cannot be returned, exchanged, or refunded.

CANADA
Free returns and exchanges within 30 days of delivery. A prepaid return shipping label is provided.

UNITED STATES & ASIA
Free returns and exchanges within 30 days of delivery when Checkout+ is included with your order. Add Checkout+ at checkout to receive a prepaid return shipping label at no additional cost. Without Checkout+, we still accept returns within 30 days, but you pay for the return shipping label to Canada.

REST OF WORLD
We're working on bringing free returns to more countries. For now, we accept returns within 30 days of delivery, but free returns are not available. You arrange and pay for the return shipping label to our warehouse in Canada. We recommend a tracked service, as we can only refund items that reach us.

Refunds are issued to the original payment method within 5–7 business days of receiving the item. Original shipping fees are non-refundable.

Free exchanges are available within 30 days of delivery for Canadian orders, and for orders from the United States and Asia that include Checkout+. Start your return or exchange at innerselfrunning.com/returns. For other orders, return the item for a refund and place a new order; return shipping to Canada is paid by you.

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