Men's Glycerin Flex wactivefleecejogger the Smartwool Women’s Intraknit™ Thermal

the Smartwool Women’s Intraknit™ Thermal Merino Base Layer Bottom combines warmth

The no-sew upper offers a lightweight

endurance score

breathable upper with dynamic cutouts reduces weight

easy-running shoe that supports consistent training

Men's Glycerin Flex wactivefleecejogger the Smartwool Women’s Intraknit™ ThermalThe Brooks Glycerin Flex brings together plush cushioning and adaptive flexibility to help runners move with confidence. DNA Tuned cushioning uses a dual cell nitrogen infused design to create soft landings in the heel and responsive toe offs in the forefoot. The result is a smooth, efficient ride that feels connected from the moment your foot hits the ground. A new engineered flat knit upper adds breathable comfort while allowing natural foot motion.