Ultralight singlet with bonded seam construction to minimize friction. Designed for unrestricted movement and race-day performance.

Race_System
Built for speed, efficiency, and race-day performance. Prioritizes lightweight construction, unrestricted movement, and minimal distraction at higher intensities.

Product intensity

Product Intensity 5

[ Specs ]

[ 1 ] Bonded Seam Construction

[ 2 ] Perforated Ultralight Fabric

[ 3 ] Anti-Chafing Fabric

[ 4 ] Friction-Minimized Fit

INNER SELF Performance Singlet in black — close-up detail INNER SELF Performance Singlet in black — close-up detail INNER SELF Performance Singlet in black — close-up detail
AirGrid™
An ultralight perforated fabric developed for race-day performance and maximum airflow.

Temperature Range: 10°C to 35°C

Température Celsius Température Fahrenheit

Weight: 95 GSM — Ultralight

[ Specs ]

Ventilation: High-airflow perforated construction

Weight: Minimal weight for race-day performance

Dry Time: Rapid moisture release

AirGrid™ AirGrid™

Performance Singlet

$65.00 CAD
Sale price  $65.00 CAD Regular price 

Black

Size Only 2 remaining
Cedar is 6'2" / 189cm and wearing M.Juliette is 5'9" / 176cm and wearing XS.
Free shipping $175+Free 30-day returns and exchanges

Ultralight singlet with bonded seam construction to minimize friction. Designed for unrestricted movement and race-day performance.

MODEL

Features

▪ Bonded Seam Construction
▪ Perforated Ultralight Fabric
▪ Friction-Minimized Fit

Materials & Care

▪ AirGrid™ Fabric – 74% Nylon, 26% Spandex
▪ Machine wash cold
▪ Hang dry
▪ Do not bleach

Product Version

2.0
Released — June 15, 2026

▪ New fabric composition
▪ Bonded hem construction
▪ Refined fit

SIZE A B
XS 18.25 23
S 19.25 24
M 20.25 25
L 21.25 26
XL 22.25 27
XXL 23.25 28
Performance Singlet size guide
Cedar is 6'2" / 189cm and wearing M.
Juliette is 5'9" / 176cm and wearing XS.

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.

Performance Singlet is rated 4.90 out of 5

Based on 7 reviews

HunterVerified buyer

Good

Color: Black

Ssuhao H.Verified buyer

Soft & Comfortable Materials.

Color: White

Alexandre L.Verified buyer

Matériau léger et très respirant
Style 10/10

Review photo 1

Color: White

Jake L.Verified buyer

Fit is perfect and I love the minimalist design

Color: Black

CustomerVerified buyer

Absolutely amazing running top, the branding is top notch. Love the star on the back, but the material also gets soften and lighter the sweatier it gets.

Color: Black

Elvis F.Verified buyer

輕薄俐落適合跑步訓練

Color: Black

Patrick S.Verified buyer

Great quality. I recommend sizing up.

Color: Black

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