my baby loves to through himself back, this has been a life saver, protects his head. If anyones interested i've linked it here!
babybasicss.com/products/1-3t-toddler-baby-head-protector-safety-pad-cushion-back-prevent-injured-angel-bee-cartoon-security-pillows
(I'm not getting anything from this just plugging something I found online that might help others)