Stay warm and comfortable with these top-rated midweight base layer bottoms from REI Co-op. The moisture-wicking fabric keeps you dry and comfortable during outdoor activities, while the brushed interior provides extra warmth and softness. The flatlock seams minimize chafing, while the wide waistband ensures a secure fit. These base layer bottoms are also made from recycled materials, making them an eco-friendly choice. Whether you're hiking, skiing, or camping, these bottoms are a reliable option for all your cold weather adventures.