grow bags?

hey,

i bought a 100 ft roll of mylar off ebay, and it came with 5 grow bags. ive never heard of these bags and searched and did not find any info.

heres the info they provided, just wondering if anyone has had any expereince with growing with grow bags..?

OXYGEN POWER GROW BAGS
5 Gallon Size

THEY ARE FOR ALL GROWING MEDIUMS. (SOIL,ROCKWOOL,CERAMIC BALLS,PLASTIC BEADS .........YOU NAME IT!!!!) NOT CHEAP......THESE BAGS ARE SCIENTIFICALLY CORONA TREATED TO BREATH LOTS OF AIR RIGHT TO THE ROOTS. MILLIONS OF TINY HOLES UNSEEN TO THE NAKED EYE THAT WON'T LET WATER THROUGH BUT WILL ALLOW AIR TO PASS.
THEY ARE REUSABLE AND THEY ARE 4 MIL THICK. THEY MEASURE OVER 10 X 10 inches SQUARE WHEN OPEN AND 21 inches TALL AND WILL STAND UP ANYWHERE WHEN FULL.

YOU ADJUST THE SIZE CONTAINER YOU NEED (1 TO 5 GALLON SIZE) BY FOLDING DOWN THE SIDES 2-3 INCHES AT A TIME THEY COME WITH NO DRAINAGE HOLES BECAUSE THAT DEPENDS ON HOW MUCH YOU FILL THEM. USE A HOLE PUNCH OR USE A RAZOR TO PUT 1/2 inch SLITS.

I've used grow bags plenty of times. Theyre cheaper and do the same thing. I always used 3 gallon because of space restraints but 5 will be great if you have the sapce. The description of them is right on so I'd use them if they were "free". I never reused mine though, easier to just toss them when done, this is when their price is a bonus!

i still say screw organic growing hydroponic all the way