Sparco is a very well known brand in the karting world. They make everything you need to keep you safe from helmets to shoes, rib protectors, and even special steering wheels specifically for karting. There website, sparcousa.com, has information about every single one of their products, specs and all. Some of my karting gear is Sparco branded, including my ItalKart team suit and my helmet.
Sparco make high quality products which I personally use. If I do something related to kart safety, this is where I can go. Having all the information and specs of equipment that I use all in the same place is going to be really helpful and speed up the process of the project.