This vest comes on a wide range of sizes from X-Small to XXX-Large.

PROS
1) This vest is made out of recycled pet bottles.
2) It's wind and water resistant.
3) It's lightweight, which makes it great for layering.
4) It has a PrimalLoft Sport lining - which is where it gets its warmth
5) The side zip pockets serve as a flattering detail.

CONS
None

This vest is very slim fitting.  I wear a size 8 and can barely zip the Medium.  When ordering, consider the slim fit and maybe order up.