Per all the cool kids; they say, "Get this one". ...so that's apparently the best description we could give you. • 100% organic cotton exterior • Charcoal Melange’s exterior is 60% organic cotton, 40% recycled polyester • 80% organic cotton, 20% recycled polyester interior • 97% organic cotton, 3% elastane ribs • Fabric weight: 8.3 oz/yd² (280 g/m²) • Fabric weight for Charcoal Melange: 10.3 oz/yd² (348 g/m²) • Side-seamed • Raglan sleeves • Neck tape • Brushed fleece lining • 2 × 2 ribbed cuffs, collar, and hem Disclaimer: US customers should order a size up But you were probably gonna anyway.