Theory+ black Ionize top - Cotton-terry - Two-way zip fastening through front - 100% cotton - Machine wash - Fits true to size, take your normal size - Cut for a relaxed fit - Mid-weight, stretchy fabric - Model is 175cm/ 5'9 and is wearing a size XSmall - Theory+ combines the modernity and sophistication of the original brand with technical aspects of active clothing. The collection uses innovative fabrics and versatile construction, creating everyday pieces that work just as well on the city streets as they do in the gym.