The Endurance Soft Baselayer is designed as an essential cold‑weather running layer, offering a second‑skin feel with seamless construction for maximum comfort and unrestricted movement. Its thermo‑regulating knit integrates ventilation zones directly into the fabric, improving breathability and moisture control during and after training. A double‑layered high collar and raglan sleeves provide targeted protection against wind and cold, while the integrated watch opening allows quick access to performance data without exposing the skin. The reflective detailing enhances visibility in low‑light conditions, and the jacquard “Protect our playground” message adds a signature finish. Made entirely in Europe from recycled Italian yarns and knitted in Portugal, the baselayer combines technical performance with Circle’s commitment to responsible, traceable production.

features & facts

• seamless construction for zero friction and maximum comfort
• second‑skin fit for full freedom of movement
• thermo‑regulating knit with integrated ventilation zones
• double‑layered high collar for warmth and wind protection
• raglan sleeves for ergonomic mobility
• integrated watch opening for quick data access without heat loss
• reflective circle logo for visibility in low‑light conditions
• jacquard “protect our playground” detail
• made in portugal with european‑sourced materials
• 94% recycled material and fully recyclable design

materials

• 94% recycled polyamide (Q‑NOVA, Italy)
• 6% elastane (Italy)
• knitted in portugal
• certified according to GRS, OEKO‑TEX Standard 100, and Italian TF traceability system