VIBRAM V Train 2.0 5 Fingers Men's Gym Footwear Size:UK8.5 9 US9.5 10 EU43 distance and elevation gain — head attachment distance and elevation gain — as well as descents and flats Planning and Analysis Features HR ZONES 🗸 HR ALERTS 🗸 HR CALORIES 🗸 % HR MAX 🗸 % HRR 🗸 RECOVERY TIME 🗸 AUTO MAX HR 🗸 MORNING REPORT 🗸 RACE GLANCE WIDGET 🗸 HRV STATUS 🗸 HR BROADCAST (BROADCASTS HR DATA OVER ANT+™ TO PAIRED DEVICES) 🗸 RESPIRATION RATE (DURING EXERCISE) yes (with compatible accessory) GPS SPEED AND DISTANCE 🗸 CUSTOMIZABLE DATA PAGES 🗸 CUSTOMIZABLE ACTIVITY PROFILES 🗸 AUTO PAUSE® 🗸 INTERVAL TRAINING 🗸 IMPROVED INTERVAL (INCLUDES OPEN REPEATS Vibrams are made in such way that these Things will be felt as soon as you start using them and you will be able to train like a pro :) they will make you feel connected to the Earth and your feet will be able to move naturally