Question regarding the fit and sizing- I'm 5'7" and 125lbs and I tend to be in between a size small and medium depending on the fit of pants. Can anyone tell me if these pants fit big?

Tech Specs:

Material:

[Shell] nylon 

Insulation:

40g Polyfill 

Waterproof Rating:

10K 

Breathable Rating:

8000g 

Side Zips:

Ghetto slits 

Venting:

Inner leg zips 

Pockets:

2 Front, 2 cargo, 1 card 

Seam Taped:

Yes, critically 

Waist:

Belt loops, suspenders 

Gaiters:

Yes 

Recommended Use:

Snowboarding 

Manufacturer Warranty:

2 Years 

Country of Origin:

China