I went outside in the cold and tried to don/doff the suit with the 150g undergarment and base layer. Seals and zipper were fine, but I struggled with getting the suit on/off my shoulders. The suit fits snugly, but I'm not too limber and I went through Christmas and Thanksgiving after measuring for and ordering it. So I'm carrying about 10 extra pounds. That's okay, I don't mind asking for help on the shoulders until I get back into shape.