I would say sizing depends on your likes for how baggy they want a jacket/riding style/riding weather. Hopefully this will help you decided. I have the ICON Team Merc Jacket that is Pink. I would say the fit is very "Straight" not super short/curved like most riding jackets, the pictures and description are very accurate. HONESTLY- It is the BEST JACKET! I have lost a significant amount of weight since I originally purchased it, but I have an XL and at the time of purchase I was a 38 size C/D chest, 5'2, and 210ish pounds, wore size 18 pants, more weight around my belly/mid section. Jacket fit great in arms, room to move, but not too baggy to make me look funny, the bust was good, the bottom of the jacket (where the zipper connects) was a little snug, but not uncomfortable. NOW- I am 160 pounds, 5'2, 34/36 bust chest C cup, size 10 pants and have a muscular/toned body-shoulders/arms, but I've got the female hour glass curves/wider hips and slimmed considerable in the middle section AND I STILL wear the same size XL jacket. NOW I can EASILY wear a very thick hoodie under the size XL and still have room to move/its baggy. (Borderline 2 sizes too big, but I just love the jacket so I pull in the adjustable bungee at the bottom of the jacket.) I am actually thinking about buying the jacket again (because it is such a versatile and ABSOLUTELY AMAZING jacket price/quality/function-ability, honestly I can't say enough good about this jacket) but I am looking at buying probably a Medium for my current size (160 pounds, 5'2, 34/36 bust chest C cup, sixe 10 pants, and have a muscular/toned body-shoulders, arms, but I've got the female hour glass curves/wider hips). I think with a Medium I would still be able to wear it and add a layer underneath (if needed) and be comfortable riding/have good range of motion. I would say large if they want to be able to be on the safe side if I wanted additional thick hoodie under it, but depends on what type of riding/weather they have as well. I live in Vermont, its usually chilly and riding season is short, so I need something I can wear on warmer days and colder days, so I have it be a little bigger to add a warmer layer for the early spring/late fall rides. I Ride a 2014 Kawasaki Vulcan 900, but have worn the jacket while riding crotch rockets and it was still comfy as well. I liked that it was a longer jacket, covered my butt/went down further for when I was moving around on my bike-never have to worry about it riding up my back, and was true to size/fit guide on the website, as I spent countless hours trying to find a jacket and was nervous about buying it online. Plus side is, Revzilla offers free returns/shipping if it doesn't fit and you want to get different size, customer service and videos were amazing and definitely helped me feel more confident in ordering, and then when I got the jacket I couldn't praise it enough (and continue to do so).

It feels like a men's jacket made into women's size. I'm 5"3' and 103 lbs so I got an XS and still, it feels a bit puffy on me. I love the simplicity of it comparing to most other motorcycle jackets. It's comfortable regardless of the puffiness.