Complex sentence: Laces in the outer canvas layer were replaced with zippers to make the suit quicker to don, the fabric around the joints was altered to improve mobility and the gloves were improved to make it easier to operate the spacecraft controls.
Split into simpler sentences: Laces in the outer canvas layer were replaced with zippers to make the suit quicker to don. The fabric around the joints was altered to improve mobility and the gloves were improved to make it easier to operate the spacecraft controls.