Materials vary by style. Examples include 63% recycled polyester / 33% rayon / 4% spandex, 92% nylon / 8% spandex, and 94% nylon / 6% spandex.
They offer multiple nursing access styles, such as a snap-placket (Henley) with easy snaps and a one-handed drop-cup design that provides feeding access from above.
Certain styles are designed for pumping: they have a snug, supportive fit that helps hold pump flanges in place and are described as compatible with hands-free pumping.
Several options include double-layer construction or a double layer over the bust to provide extra coverage while breastfeeding.
Features include adjustable straps and simple one-hand clasps or snaps; some styles are pullover tanks with no closures.
Care instructions listed for multiple items are machine wash and tumble dry.
Options include Henley-style front plackets, scoop necklines, and sleeveless pullover silhouettes in rib or knit constructions.
Most options are sleeveless. At least one listing specifies a below-waist length.