SWELL SPOTS, SOBOL SMALL, EACH Designed by Maria Sobol, PT, CLT-LANA, to address post-mastectomy fibrotic tissue on the chest wall, especially that which is due to radiation or surgical incision scarring. Place a Sobol Swell Spot in a sports bra to position and add compression. Therapists report that the Sobol is ideal for the hip, anterior / posterior knee, and the abdomen, when used under bandages or compression garments.