An attachment system includes a wearable carrier and an attachment slot. The wearable carrier is formed at least in part from a flexible material having an outer surface and an inner surface opposite the outer surface. The attachment slot is formed through the flexible material and configured to receive a strap of an attachment accessory. The attachment slot extends from a first end to a second end and includes a first segment, a second segment, and a third segment. The first segment extends from the first end to the second segment. The second segment extends from the first segment to the third segment. The third segment extends from the second segment to the second end. The first segment and the second segment define a first non-orthogonal angle therebetween. The third segment and the second segment define a second non-orthogonal angle therebetween.