Prepare all ingredients: Cook the vermicelli noodles according to package instructions. Rinse under cold water and drain well. Prepare all vegetables and herbs.

Soak rice paper: Fill a large shallow dish with warm water. Dip one rice paper wrapper into the water for about 5-10 seconds until pliable but still slightly firm.

Assemble rolls: Lay the damp rice paper on a clean surface. Place a few shrimp halves in the center, followed by a small amount of noodles, lettuce, herbs, carrot, and cucumber.

Roll tightly: Fold the sides of the rice paper over the filling, then roll from the bottom up, keeping the roll as tight as possible without tearing the wrapper.

Repeat: Continue with remaining ingredients. Place finished rolls on a plate lined with a damp paper towel to prevent sticking.

Serve: Cut rolls in half diagonally and serve immediately with peanut dipping sauce or hoisin sauce.