Nature Baby Billy Jumper Navy Basket Knit The Country Providore Billy Jumper Brook Daisy and Hen Chocolate Chunky Knit Jumper barebebe Basic Billy Jumper LN Knits Billy Knit Jumper Berry Peach The Label. The Billy Jumper is a classic, easywearing sweater style that will keep little one comfortable all year round. Knitted in a chunky certified organic cotton yarn, this jumper is durable and easy to care for. * GOTS Certified * 100% organic cotton * chunky tuck knit stitch * knitted rib cuffs and hem