Combine mango, beans, onion, cucumber, spinach, and avocado in a mixing bowl.
Add maple syrup to lime juice and stir to mix.
Pour lime dressing over ingredients in mixing bowl and stir to mix.
Fill a large bowl with warm water and set it next to a large plate.
Submerge one spring roll wrapper in the warm water for about 20 seconds and then place the wrapper on the large plate.
Place about 3 Tbsp. of filling in the center of the wrapper.
Carefully fold sides of wrapper over filling and then fold over the front and roll forward to wrap and seal the roll.
Repeat with remaining spring roll wrappers.