“At 6'3" 220, usually I'm an XL in all shirts/jackets and the Champ Jacket fits perfect in XL...
BUT...100% of my vests are L and I even spoke with Zero Restriction and they agreed with the L sizing so I ordered L from Taylor Made as part of their collaboration BUT...just know that the L is small (40-42 chest) and although it fits in the waist, it extremely small dimension through the chest makes it shift and not be "zero restriction". Result? the jump between L and XL is considerable.
Bottom line: this hoodie is absolutely perfect for all activities and moderate temperatures in ultimate comfort!”