The Solstice Graphene is guide grit plus lab smarts. 

• Function: The newest, best iteration of Bight Gear's classic baselayer. Graphene fabric takes this piece to new heights with a light-as-air feel, UPF 55+ sun protection, next-gen moisture wicking, and natural antimicrobial properties.
• Layering: Good for a range of temps and conditions. Wear alone as a sun hoodie, or as a next-to-skin baselayer under other layers when things get cold.
• Fit: Relaxed

This is the best baselayer we've ever made. Period. Years of development and iteration led us to a new synthetic fabric that feels like cotton, but wicks like synthetic. It incorporates Graphene nanomaterial for increased heat transfer and odor reduction and comes in at UPF 55+ sun protection to keep you from getting microwaved up high.