It most likely holds 80. This should be a circa '91. When bulk loading systems first appeared, they were cobbled together from PVC pipe, and "Butler Creek" scope covers. Hoppers of the day rarely exceeded 90 round capacity. This appears to be one of the earlier "factory made" set-ups.
Is it anything?
Yeah, it's cool, old school and in good condition. Are there any markings on the lids? Perhaps a tag inside one of the pockets naming a manufaturer?
The camo could be "Fast Eddies" (USI).
Fearlessly, the idiot faced the crowd, smiling...