Personalized Ohm Tree Men's V-Neck T-Shirt. A tree filled with the ohm symbol and edged in a bit of resistance is a fun winter holiday and Christmas gift design for electricians and electrical engineers. 4.7 oz., 100% pre-shrunk cotton Narrow, set-in 1x1 mitered V-neck collar Shoulder-to-shoulder taping Double-needle stitched sleeves and bottom hem