5'9" 185 lbs plus small I really think you'll be fine as long as you stick to what you normally get. The sleeve length of XL fits me but I'm afraid going to medium or L will make them too short for the price it's not worth sending back so I'll order a size down and see what happens.
π Nantersan Placket Raglan Tee - A Casual Must-Have
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H2H Mens Casual Slim Fit Short Sleeve T-Shirts Cotton Blended Soft Lightweight V-Neck/Crew-Neck
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INFLATION Bamboo Shirts Sleeve Elastic Men's Clothing in Shirts
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Men'S Long Sleeve Polo Shirt - Slim Fit, Stretchy, Breathable Collar
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Off White Men's Clothing: Amazon Essentials Lightweight Active Sweatshirt
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Crewneck Fleece Sweatshirt For Men By Goodthreads
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Newzill Compression Calf Sleeves (20-30MmHg) For Men And Women - Ideal Alternative To Compression Socks, Perfect For Running, Shin Splints, Medical Needs, Travel, And Nursing
42 Review
Carhartt Crewneck Sweatshirt Regular X Large
42 Review