You're probably used to getting your gear dialed in all by yourself, but sometimes it's nice to let someone else do the work. The Castelli Wind Long Sleeve Base Layer has the weightless windproof thing all figured out. SG0.6 Wind fabric provides the stretchiest, lightest, and most breathable wind protection around. The lightly brushed interior feels soft next to your skin like a regular base layer, and not like a crackly windproof membrane. The shoulder seams are designed for smooth layering under a jersey or jacket.

• SG0.6 Wind fabric is stretchy, windproof, water resistant, and provides insulation with a slightly brushed interior
• Recommended for 45 - 60 degrees