is this a waist jacket ? does it have a elastic bottom or a string inside at the bottom?

Tech Specs:

Material:

[Shell] 100% nylon twill & 97% polyester, 7% elastane Omni-Tech Stretch; [Lining] nylon taffeta, Flashy Fleece (polyester) 

Insulation:

40g Microtemp XP 

Waterproof Rating:

10K 

Breathable Rating:

10000g 

Core Venting:

Underarm zips 

Pockets:

2 Hand, 2 chest, 1 security, 1 internal audio, 1 goggle 

Seam Taped:

Yes, fully 

Powder Skirt:

Yes, adjustable 

Hood:

Yes, removable 

Zip-in Compatibility:

No 

Recommended Use:

Skiing 

Manufacturer Warranty:

Lifetime 

Country of Origin:

Antigua