The Amby Baby hammock spring is rated to 12kgs. A second spring may be used for heavier and/or older babies up to 24kgs:
If you are unfortunate enough to lose your spring and require a replacement, they can be delivered the next day so your baby won’t have to wait long for a good night's sleep. Just let us know that you need one in an extra hurry!
* One Year replacement Warranty offered on all Amby Products.