Homevative Folding Elevated Pet Bed, No Assembly, Indoor/Outdoor, Low Profile, Non-Slip Feet, Travel Bag Included. 42" x 24" x 5-1/2"

Q: I have a 100lb male chocolate lab. What size should I get?

My 60 lb German Shepherd mix has plenty of room on the Xtra Large size, and although he weighs a lot less than your dog he has very long legs, so I thionl you would be good with the Xtra Large. I will also add, I was initially a little worried about how stable this bed would be, but he sometimes sits on one end of it and it does not tip over. We keep it on the front porch during the summer and as I soon as I let him out the door he heads right to it!