Darn Tough Men's Element Micro Crew Lightweight Running Sock - 1118 option-set-619396-image-swatches-3 User-replaceable battery lasts up to

User-replaceable battery lasts up to 20 hours

Give your dog the ultimate wellness boost with Total K9

Additional elastic pockets deliver storage for calls or a wind gauge and the internal lens cloth keeps your glass clean and sharp

It's especially useful for trainers or handlers who rotate equipment between dogs

The cuffed design provides the flexibility to wear above the ears or covering them

Darn Tough Men's Element Micro Crew Lightweight Running Sock - 1118 option-set-619396-image-swatches-3 User-replaceable battery lasts up toWe don't use strings, but if we did the Element Micro Crew is first string varsity all pro.