Nicely packaged, bins wrapped & nested, lids wrapped. Easy assembly of optional casters, nice rubber sheath over caster peg, seats firmly in corner hole of bin, NO NOISY WIGGLING. I got 2 bins, one at office casters installed, one at home wo casters, flat on floor. Both hold an insane amount of K9 kibble. Scoop easy access, easy portions.Top rim snap on bin, pull/push front edge a bit until it clicks into place.Clear lid slides on guides on sides, push front edge over lip, then clear lid is free to slide all the way back.May get 3rd bin for bulk bird seed. Bin is much more stable, tidy storage than saggy sack.