My Mom had alzheimer's and lived with us for 2 yrs before she passed. I wouldn't put in zippers or anything too rough to the touch.
Mom's skin was thin -which made it bruise & tear easily. When she swung out of the front seat of the car one day, her sweater rubbing on her skin which caused a large skin tear on her elbow. After that I had her in over size faux suede long sleeve shirts. No more skin tears & she loved how they felt