There are lots of things to carry to the track or the start of the special: jacket, pants, boots and gloves, helmet and goggles, the protections, neck brace included... you could go crazy trying to carry it all separately. So the best thing is to get a large bag for carrying it all, with or without wheels. These are generic bags, but there are some specific ones for the helmet and neck brace provided by Leatt or even a model from Fox exclusive for goggles.
At Motocard, enduro fans will also find waist bags for storing tools. You know that sometimes you have to undertake a small repair on the go, so here you can store a survival kit and they can be fitted to any part of the bike. But for those of you that prefer something with more capacity, you could opt for a back pack, that are better padded in the case of a fall.
Another important point for a rider is their hydration. We now have hydration bags with tube included that allow us to drink on the go. Basically there are two types: bags that are included inside back packs and the systems that are "stuck" to the neck brace, more practical for motocross than the former.