Based on my history with spanx if you really want some compression and slimming effect I’d recommend ordering two sizes smaller than you wear or that’s what works best for me.
Arus Turkish Bathrobe XX Large Burgundy
61 Review
Length Hooded Bathrobe Housecoat Nightgown Men's Clothing in Sleep & Lounge
55 Review
Stylish And Comfortable: Goodthreads Men'S Slim-Fit Chino Shorts With Comfort Stretch Technology
49 Review
SIORO Reindeer Matching Christmas Pajamas for Men - Festive Sleepwear
49 Review