Personalized Ohm Tree Newborn Layette. 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. 100% combed ringspun cotton 5.8 ounce 1×1 baby rib sleeper. 3/8" flatlock binding at envelope neck and cuffs. Back sleeve flap to protect hands. Elastic opening at bottom. Infant: 0-3 Months