Fabrics: Athletic Wicking Fabric

Iris Bralette prototype

Athletic wicking knits are a rather broad category of poly/spandex knits designed to wick moisture away from the body.  Very popuar for sewing activewear, these athletic knits come in a variety of weights and fiber contents.  I will admit I have not yet sewn myself activewear pieces, so my knowledge of these fabrics is limited to this particular one I used. 

This space dyed wicking fabric from Spandex World is a medium weight 88/12 poly spandex blend with 60% stretch both lengthwise and crosswise.  While it does have a high spandex content, I did not find this fabric to be very supportive.  It just doesn't quite "snap" back into place the way milliskin does.  However, if you wish to make a sports bra to match a pair of leggings, the support can be improved with the use of a bust sling, and perhaps a firmer lining. 

Pros:

Wicks away moisture from the body, so this is a good option for sports bras.  Athletic knits are widely available for making activewear.

Cons:

Not a lot of support.