The Icebreaker Merino Women's Oasis Long Sleeve Crew Neck Shirt is a top-rated hiking bodysuit top that offers exceptional warmth and comfort. It is made from 100% merino wool, providing superior insulation and moisture-wicking properties. The shirt has a slim fit and features flatlock seams for reduced chafing and irritation. It also has UPF 30 sun protection, shielding your skin from harmful UV rays. The shirt's merino wool construction makes it naturally odor-resistant, allowing you to stay fresh even during extended outdoor activities. Whether you're hiking in cold weather or layering for added warmth, this top-rated bodysuit top is a reliable choice.