A method for creating garment cuffs includes applying a high-polymer heat-sealable material on a cuff area of the fabric used for the garment. The heat-sealable material and the fabric underneath are then cut with an ultrasonic cutter to form the cuff and concurrently finish the lower edges of the cuff. The heat-sealable material has properties that allow it to stretch from an equilibrium point in response to tension applied on the material, and recover back towards the equilibrium point in response to release of the tension on the material. Reinforcing the cuff area with the heat-sealable material allows the cuff area to maintain its stretch and recovery properties even after the fabric has degraded after extended use and washing of the fabric. Furthermore, the ultrasonic cutting causes some of the heat-sealable film to melt into the cut edges of the fabric at the cuff to create substantially sealed edges at the cuff.