Mild to moderate over pronaltin. Lucky 13 is the best Adrenaline GTS yet. Special attention was paid to the underfoot flex by adding Omega Flex Grooves and continuing Omni Grooves in the forefoot, allowing the outsole to bend and shape naturally. Continuing with the tradition of tailored fit, stretch eyelets lock into the medial side to capture the foot better and technologies like Flextra and anatomical Brooks DNA deliver customized stability and cushion. No luck here, just purely good design.