I know the sizing thing has been covered exhaustively already, but i'm still wondering: i'm 6' 155lbs with a good set of shoulders but a rather slim waist. Is a size medium going to have the hem hanging open in the back or should i try and squeeze myself into a small? I wear a medium very comfortably in a bunch of other arc' items but they all require use of the waist drawstrings to fit close around my waist.

Tech Specs:

Material:

[Shell] Fortius stretch-woven nylon; [Lining] brushed 

Waterproof Rating:

Water resistant 

Breathable Rating:

Not specified 

Core Venting:

No 

Pockets:

1 chest 

Seam Taped:

No 

Powder Skirt:

No 

Hood:

No 

Zip-in Compatibility:

No 

Weight:

9.7oz (276g) 

Recommended Use:

Skiing, climbing, hiking 

Manufacturer Warranty:

Lifetime