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Ships within 48 hours · Estimated delivery Aug 27 - Sep 1
Recycled Polyester Fleece Fabric
Knob: Tapered
5/8 height for the perfect blend of speed & support
Sun Bum's ultra sheer/dry touch continuous spray formula delivers Broad Spectrum protection
The Boost Aero features a slightly larger head size (660 cm²) for enhanced forgiveness
Smartwool Mens Classic All Season Merino Base Layer 1 4 Zip JMPO3000 Recycled Polyester Fleece FabricOur popular Classic All Season Merino Base Layer 1 4 Zip is the perfect base layer for warm or cold weather. This top uses our All Season weight Merino fabric wrapped around a nylon core to increase durability, while still keeping the 100% soft, Merino wool you love next to skin. Side seams help minimize chafing while wearing a pack and offer a body enhancing fit. This base layer is comfortable, powerful, sustainable, and, frankly, do it all able.
