Some are smooth and sort of flat so they slide together nicely for a slippery feel. (My favorites!)
Some are more like long narrow tubes of plastic that have been sliced so the pellets have sides and don't rub together as nicely but take up more room for a lighter, airy feel. You can get these at craft shops.
Then there are the pellets I just got from my supplier today (who used to send the first ones). These are cut like the second description but made of rubber so they sort of squish, stick together and just feel weird. I'm not sure of their benefit yet. No, they aren't the white Jelly Pellets... not that squishy.
Anybody know where I can get ones that fit the first description?????
CR Crafts sells the first kind...and I think I got my last batch from Jo Anne's Fabrics.