Aftershokz Trekz Titanium Mini Headphones Size:One size fits all It's been designed with comfort

It's been designed with comfort in mind

22mm heel)

Expandable main pocket volume

The engineered mesh is lightweight and breathable as well as being very durable and the combination of the midsole compounds

lower back

Aftershokz Trekz Titanium Mini Headphones Size:One size fits all It's been designed with comfortThe lightweight and comfortable Trekz Titanium Mini wireless stereo headphones are the safest alternative to traditional sport headphones and earbuds. Bone conduction technology, an open ear design and a suite of convenient features deliver premium music play and crystal clear calling without compromise. Designed with athletes in mind, Trekz Titanium are sweatproof, secure, and will allow you to hear your surroundings no matter where life takes you.