A starter climbing set scaled to a baby who is still crawling: the smallest block stands only 4-in high and the tallest reaches 16-in, so a first pull-up has somewhere to happen. Six shapes make up the set, a small rectangle, a large rectangle, a cylinder, a half-cylinder, a trapezoid and a ramp block. Pearl cotton fill under a hard-wearing PU cover holds the whole thing to 7.5 lb, light enough for a parent to carry it across a room in one trip. The waterproof surface wipes down after spills, and the seams are stitched to resist splitting. ASTM certified.