. Here are some general guidelines: MICRO - Deck width: 0.00" or smaller - 0 years old or younger, under 0'0" tall. Size 0 shoes or smaller. MINI - Deck width: 0.0" - 0 to 0 years old between 0'0" & 0'0" tall. Size 0-0 shoes. MID - Deck width: 0.0" - 0 to 00 years old between 0'0" & 0'0" tall. Size 0-0 shoes. FULL - Deck width: 0.0" or larger - for all skaters over age 00, taller than 0'0" with a shoe size of 0 or up. 