Is there a way or another product on this site where I can just buy the liner itself?

Tech Specs:

Material:

[Shell] Omni-Tech HP; [Shell lining] Radiant Mesh II 

Insulation:

[Snap-in liner] 100g Microtemp 

Waterproof Rating:

[Shell] 10K 

Breathable Rating:

[Shell] 10000g 

Core Venting:

[Shell] Underarm zips 

Pockets:

[Shell] 2 front, 1 chest; [Liner] 2 front 

Seam Taped:

[Shell] yes, critically 

Powder Skirt:

Yes 

Hood:

Yes 

Zip-in Compatibility:

Yes, zip-out liner included 

Recommended Use:

Wintersports, winter wear 

Manufacturer Warranty:

Lifetime 

Country of Origin:

China