We love this lightweight base layer for the sun protection as well as the mesh under sleeves! 

Beat the heat in this ultra-lightweight Base Layer. Ideal for hotter climates, its UV30+ fabric protects you from the sun's harsh rays, while a cooling treatment makes it comfortable to wear in any temperature. Its lightweight and soft fabric, combined with a quarter zip, 360° stretch, and antimicrobial properties, ensures a comfortable fit. Mesh under the sleeves provides extra ventilation, making it ideal for all outdoor activities. The discreet LeMieux logo branding is a mark of quality and a symbol of style, ensuring you look your best while staying protected.

• Featherlight UV30+ cooling base layer with antimicrobial properties to control odor
• Mesh under sleeves for ventilation
• Ultra lightweight and soft with 360° stretch
• Discreet LeMieux logo branding