the frame for the top is made out of 1/2 electrical conduit from home depot. i used the 90 degree pieces to get the arch right and then welded it all together to flat steel that runs on top of the bed, bolts into factory holes for top. the top is made out of 9 yards of marine vinyl. sewed two 4.5 yard pieces together in my front yard. i used some grommets on the sides, front and back with black rope to tie it down. i can untie the rope and the sides and back go all the way down. when i don't need it down, i just roll it up and tuck it. i have used it all last summer and on 3 wheeling trips. i mounted 2 12 volt fans in back to frame for people in back seat. i can't believe how tough it is. it all comes off in one piece. only thing i don't like is it's not a roll cage. if i roll it won't help at all. i plan on getting a cage in the future and then putting the top over that.