Every man that cares for his back, or suffers from back pain, should buy the birth sling for their partner. That thing will keep your birthing woman hanging in there (instead of on your shoulders!!!), hahahahahah!!!!
Seriously, it was such a great tool to have on hand. She could swap between the bed, the pool, cushions in the floor, the yoga ball, my shoulders and the birth sling. But because the birth sling gave her so many alternative positions, she could stay there longer than in the previous options. It's a no brainer.