"Good elasticity" means the ability of something to stretch or bend easily without breaking, and then going back to its original shape or size. Full definition
The First Rise: Sometimes called fermentation, allowing the yeast to create gas and flavor, and good elasticity in the dough, but not so much that it becomes slack from over rising. (ruhlman.com)
A healthy immune system also promotes clear, well - hydrated and youthful skin with good elasticity and resilience. (glutenfreeshanghai.com)
They have clear, smooth ear canals, good elasticity of the gliding membrane and a good appetite. (smallanimalchanel.com)