, the inside of the shoe contains anti-friction socklining with antimicrobial material to ensure comfort and breathability, while the gusseted tongue adequately keeps out any sand or grit. The Lace Lock system allows for easy adjustment, while the Trailspring
own plan on the calendar which will then synchronise with the watch on connection. These plans can be as in-depth or vague as you like (for example, run at 10mm pace for one mile, then 10 intervals of 400m at 8mm pace followed by two minutes at 12mm
