Small Is Mighty (SIM) T-Shirt (For SIM Volunteers only) Sale! from $0.00 Size S M L XL 3XL Qty. Sold Out This T is available to all Small Is Mighty (SIM) volunteers only. S M L XL 3XL Chest Width (Laid Flat) 18" 20" 22" 24" 28" Body Length 28" 29" 30" 31" 33"