Bio Degradeable material which roots can grow thru?

Does anyone know of a Bio Degradeable material which roots can grow thru?
The material i'm looking resembles what is used to hold jiffy pellets together. I don't want a material which breaks down in a short time.

The reason... is for seedlings/clones...
I want to place rooted clones (from an aerocloner) in small bags containing perlite. Then, when clones are ready, they and the perlite bag will be placed amoungst clay pellets (Hydroton) in a hydro system, the bags will prevent the perlite from escaping into the hydro system. Much less the same as jiffy pellets, only instead of containing peat, i want perlite.

cotton socks or panty hose maybe? or you could use coco pots, fill them up w/ perilite, then cover the top with coco mat.

i was gunna say panty hose they work great and stretch out well

Thanks for the quick guys, but thats not what i'm after. I need the material which holds jiffy pellets/pucks together or something similar.

I want to transfer rooted clones from an aerocloner into small pots of perlite. By doing so, the clones will grow roots thru the perlite, but when time comes to transplant into larger pots of clay pellets (what a mess), plus, the perlite will escape and mess with the hydro system.
I need a material which the roots will grow thru, but hold the perlite from escaping into a hydro system.
Panty hose or cotton sock are an idea, but you can imagin me going into a shop asking for a 100 pairs of them. This is for quite a few plants (SOG).

why not just use woolrock?

I know what your saying mate, split a rockwool cube in half and sandwich the rooted clones roots between them.
I don't really want to use rockwool, i would like the solution to drain from the roots as quickly as possible (flood and drain system), i would like as much oxygen getting to the roots as possible (between flooding ofcourse).
There has to be some material available to suit my needs.

Why dont you just use netpots? Can they hold perlite? Then just transfer the entire perlite, netpot setup into the hydroton. Otherwise you may want to consider net pots full of hydroton to transfer the clones to and just put them in the larger container later.

Yep, thought of that too mate. Perlite floats, so when the table is flooded the perlite will become too loose for the clones. Plus, small particials will end up in the rez. If the perlite was in a bag made from the material used by jiffy pellets, it would make things alot simpilar for me.
Clones will be leaving the aerocloner and going into little 3.5"x3.5" square pots. I would really like to use perlite as the medium at this stage, then transplant into hydroton in the bigger pots.