There are 2 different sizes of rice paper wrapper available - either the 6.3"(16cm) or 8.7”(22cm) in diameter. I prefer to use the smaller ones - I find it easier to wrap, and a little bit more dainty! The only downside is that you cannot put in as many things as you would like into the Spring Roll. Try both and see how it fits your needs.
There are 2 methods to moisten the rice paper wrapper before using it. The first method was explained in the step by step guide to wrapping up the Vietnamese Spring Roll filling with rice paper.This method is more efficient as the water works on the rice paper quicker, and if you have more space in the kitchen.
The 2nd method is more suitable for the dining table. Use a small bowl or a mug and fill it up with warm water. This uses less space, and it is more presentable when you are dining with guests.