This slackblock 13in is in great shape, no imperfections and like new.

See manufacturer description:

BALANCE IS POWER: SlackBlock develops your dynamic athletic balance to improve agility, coordination and speed. Lower your handicap, up your batting average, throw farther, improve your pickleball game, run faster and reduce injuries!

FULL-BODY WORKOUT: Crafted With Pride in the U.S.A.. Used by national championship professional and college teams. Engages multiple muscle groups simultaneously to achieve a well-rounded workout that helps you play your sport better.

COMES IN 3 SIZES: 15" for people who weigh more than 230 Ibs. If your weight is in-between, select the larger size.

COMPACT AND PORTABLE: Take your balance training on the go! The SlackBlock is compact and lightweight with a reusable box, making it easy to use at home, gym, and work

SIMPLE AND EFFECTIVE: build stronger, more resilient, and reactive muscles with SlackBlock. Designed by the author of Balance is Power and the developer of the patented SlackBow Athletic Balance Training System.

Dimentions:

15”L x 4.63"W x 3.75"H