Wouldn’t these be classed as an aftermarket product?

Hi Helen, thank you for your enquiry. Correct these soft straps are classed as an aftermarket product. However, these products are not illegal and we follow manufacturers guidelines as well as leave a disclaimer on all products classed as “aftermarket” so that customers are well aware of this. If they choose to use this product child restraint and any injury or damage that may occur, due to the misuse or incorrect fitting of this product will not be accepted as the responsibility of the supplier or manufacturer and completely up to the consumers choice to use or not! Baby On The Move recommends to consult your car seat manual or contact the manufacturer to ensure warranty while using this product. We hope this answers your query.