There are 50 pouches in a pack
Yes, they are reusable.
Open the bottom gusset to expand the pouch, pour your puree half filled, zip-lock and place in a stand up position in boiling water and cook as required.
No, they are not microwaveable.
You can purchase this product here on our website, through our enlisted distributors or you can click on the store tab at the top to see what stores have them available
Shipping usually takes within 2-3 business days.