KNEX Space Invasion Roller Coaster Building Set Pajamas Lift a piece to reveal

Lift a piece to reveal new picture of an activity happening in each room of the house

expose the sensor by removing a piece in a brightly lit room

These 5-Pack Sleeveless Bodysuits are made of a soft and lightweight fabric to be gentle against baby's sensitive skin

since adding bright colors into the mix only ups the fun factor of this hands-on art project

Makes a satisfying ''crunch'' sound when the included wooden knife slices the pieces apart

KNEX Space Invasion Roller Coaster Building Set Pajamas Lift a piece to revealK'Nex, Space Invasion Roller Coaster Building Set, Contains 438 Parts & Pieces, App Integration, Motorized Chain Lift, Themed Graphic Panels. Build this incredible, thrill roller coaster using the included step by step, color coded building instructions. The traditional, motorized chain lift brings the coaster car to the top of track. Once there, the coaster car rushes down the track and resets for another ride. Once done building, download the FREE