OverviewThe Men's Mechanism Pro Sleeveless Base Layer is the race tier of the PNS base-layer range. Where the standard Sleeveless is a slim-fit polyester training piece, the Mechanism Pro is a compression-fit polyamide-and-elastane build that holds tight against the skin under a race jersey, wicks hard and dries fast between efforts. Sleeveless like its training sibling, but cut and constructed for race day — the base layer for the Mechanism end of the wardrobe.DetailsBest forRace days and hard summer training sessionsRiders who want a compression fit under a race-cut jerseyHot conditions where quick drying between efforts matters SpecsSleeveless, compression fitPolyamide with elastaneBreathable, moisture-wicking and quick-dryingSummer weight, worn next to skin under a race jerseySizes: XXS · XS · S · M · L · XL · XXLMaterials & CareLightweight polyamide-elastane compression base layer.Machine wash cold (30 C max) on delicates with similar colours.Do not use fabric softener - it blocks wicking channels.Air-dry flat. Do not tumble dry. Do not iron, do not dry-clean.Rotate between two base layers across back-to-back ride days to preserve the fibre loft.Bundle & Save Build a bundle and save up to 15% off. Shop Bundle Builder