Thermal Merino Reversible Headband Black Charcoal Heather MT238 HG estimates the point where your Below 15 estimates the point where your muscles start to rapidly fatigue) No Customizable data pages Yes Race an activity No Finish time Yes Elevation profile No Configurable lap alerts Yes Automatic sync (automatically transfers data to Garmin Connect) No Incident Detection during select activities Yes PlaysLike distance No Virtual Partner No VO2 Max (Run) Yes Relaxation reminders Yes Reminder alerts No Physio TrueUp Yes Custom alerts No NEXRAD on moving map No Back to start No Vertical oscillation and ratio (the degree of 'bounce' in your running motion and the cost benefit ratio with stride length) No Training Load (your total training load for the last 7 days calculated from estimated EPOC) No Altimeter with adjustable baro setting No Physical size 42 x 42 x 11 Our fan favorite sock technologies aren't going anywhere—offering you the comfort and performance you expect from Smartwool Perfect for warmer days or high aerobic activities You will always want to have the Merino 250 Reversible Headband handy this winter