Chance AROW Long Sleeve Baselayer

Positively impacting the world through running. Chance are passionate about building the finest running apparel on the planet and using it to build a community of environmentally and socially conscious runners, empowering them to make a positive impact on the world in which we run.

A high collar and half zip foundational baselayer with quick thermoregulation, and meets mandatory kit requirements for ultra-distance races. Ideal for year-round use, long days, and unpredictable conditions. The Chance AROW Baselayer uses Pontetorto® Tecnostretch—an Italian fabric engineered for warmth, stretch, and moisture control. Weighing just 200g, it’s ultra-light, fast-drying, and packable, with a brushed inner for comfort and a smooth outer for clean layering.

• Meets mandatory kit requirements for ultra-distance races - ideal for year-round use, long days, and unpredictable conditions.
• Constructed from Italian Pontetorto® Tecnostrech recycled technical knit fabric
• Half zip front for airflow adjustment
• High collar for protection and warmth
• Slightly fitted cut designed for performance layering
• Fast drying, breathable and moisture-wicking
• Tonal Chance logo on chest
• Fabric Composition: 100% Recycled Polyester (Pontetorto Tecnostretch fabric)
• Made In: Portugal
• Colourway: Black
• Product Code: AW25CHNC26A-BLK

Product Measurements

Chest Width (Flat) - Measure 2cm below armpit, seam-to-seam
Small: 43cm / Medium: 46cm / Large: 49cm / X-Large: 52cm

Body Length - High point shoulder to hem
Small: 66cm / Medium: 68cm / Large: 70cm / X-Large: 72cm

Sleeve Length - Shoulder seam to cuff (or neck to cuff raglan)
Small: 64cm / Medium: 65cm / Large: 67cm / X-Large: 69cm

All sizes displayed on our website are UK sizes.

We are currently working on measurements for apparel and accessories so please bear with us.

In the meantime, for footwear, please refer to the sizing guide here. However, if you require any additional advice on sizing, please contact us.

Worldwide shipping, domestic shipping in the UK, and in-store collection is available.

You can find all relevant shipping information here.

We have a 28-day return policy, which means you have 28 days after receiving your item to request a return. 

To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.