This grey and pink Fantabody Lya open back leotard is cut from technical, breathable fabric. Shaped for a tight stretch fit, this style has a round neck, slender straps cutout back and thigh-grazing hems and features an all-over tie-dye pattern. For us, wearing a onesie has until this point equalled relaxing on the sofa, but in this Fantabody leotard, we think the activity will be very different from that. Pilates anyone?