This is the FLUX DSW M. It can be used without any problems, but there is a slight chip-like mark on the ratchet strap. The strap is unlikely to slip at this level. After trying various things, I realized I prefer my feet to be very stiff, so the DSW wasn't a good fit for me (meaning it's soft). It might also be good as a base for modification, such as cutting the highback to make it like the FLUX CX. *The attachable sponge-like material for the base is not included (the one you attach when extending the toe or heel). *The box will be a completely different one.