• EverdryAero™ bi-stretch warp and weft fabric (90 g/m²), up to 65% stretch
• Apparent elastic modulus of 0.057 N/%
• Weight: 147 g in size M
• Thermal protection CLO: 0.20 to 0.25
• Mid-length sleeves (7") just above the elbow, convertible via DualShiftSleeve™ snap button
• DualShiftCollar™ semi-rigid collar that can be worn up for sun or thermal protection, secured by snap button
• AeroFlowFront™ front openings with snap buttons for adjustable ventilation
• AeroFlowBack™ rear opening with snap buttons for thermoregulation under the pack
• ChestPockets™ positioned under pack straps, diagonal opening
• StructurePannel™ shoulder panels in high-density fabric with enhanced UV protection
• FoldedShape™ pattern with two vertical front pleats for a close fit in the pack contact area
• Active Seam ultra-fine stitching (8 stitches/cm) in textured yarn, no seam allowance
• Reversed Thermal Sealing™ outward-bonded finishes eliminating friction
• Angular finition™ side slit for freedom of movement
• Estimated lifespan: over 10,000 km
• Durability: over 200 wash cycles

The Shirt 235 is a modular trail shirt designed for the changing conditions of ultra-distance running. Its EverdryAero™ fabric, developed by Payen mills, integrates a network of soluble yarns dissolved during dyeing to create a grid of micro-ventilation channels. Front and rear snap buttons allow airflow regulation according to effort intensity: open during hot hours to maximise ventilation, closed at night to limit heat loss. Convertible sleeves via snap button and the semi-rigid fold-up collar complete this adaptability. Chest pockets, strategically placed under pack straps, provide easy access to a sponge, bandana, or beanie.

Made in Portugal.