I was sore from the amount of boxes they are delivering

I can’t recall what delivery company came to deliver some medium sized boxes this Christmas, but the man who did and took them out of this truck felt back discomfort from the large amount of parcels delivered during these special days, when everybody is contacting family and friends to wish them season Greetings.
I thought of giving him a special gift, since it is underwear and I didn’t know this man at all, I gave him a couple of black LUMBARWEAR men’s fly front boxers, to protect his back when he is carrying so many parcels and in the truck for many hours a day.
He was surprised but at the same time pleased by my good action, I guess I was influenced by the Christmas spirit, since it made me happy and I hope it works well for him******