Dickies Men's Short Sleeve Coverall Big-Tall - Durable Workwear for Mechanics, Painters & Industrial Workers - Comfortable Cotton Blend Jumpsuit for Heavy-Duty Jobs

I'm a big guy - 5'10" 340 lb. Big across the shoulders and chest with a well cared for beer gut. I usually wear a 2x or 3x in T-shirts and sweatshirts so I thought I'd go with a 3x for these coveralls. Not only were they tight to zip up, they were tight and hard to get up on shoulders - just tight all over. I sent them back and ordered 4x. Nice and roomy - zips over my beer investment and fits nice around chest and shoulders. Some room to spare- can probably wear a sweatshirt or 2 underneath for the cold weather. As for now in the summer - light and comfy with room to stretch and bend. I worked 6 hours under hood and underneath car on a hot day and the coveralls move nicely with me. Great suit if you can get the size that fits you right.