Kanga Care Baby Soft Muslin Crinkle Bunny Ear Wood Teething Rings use the same Rayon from Bamboo Muslin that our customers have grown to love from our collection of Kanga Care Serene Baby and Forever Blankets! Made from soft, lightweight and breathable 100% viscose of bamboo fiber, it lends itself to becoming the perfect reversible fabric strip, with a hidden crinkle layer inside, to tie to a wooden ring for our Bunny Ear Teethers!