M L i5 Apparel Turquoise Wind Breaker Rain Coat Jacket Front Zip High Collar

Brand new outdoor apparel for rain has full zip front, high neck, breathable mesh lining. Two pockets Tiny polka dot. Long sleeves I think these run small so listed as M and L even though they are marked L and XL. What do you think? L arm pit to arm pit 20” Adjustable waist 30” Back length 28” XL arm pit to arm pit 22” Adjustable waist 34” Back length 31”