420 denier nylon fabric is a 420 (400) Denier poly coated nylon fabric. ... 420D nylon pack cloth coated with polyurethane makes it highly water repellent. Water repellent fabrics resists wetting, but if water strikes it with enough force, it will penetrate the fabric. For waterproof fabric, try our 18 oz vinyl.

What denier is waterproof?

Fabric denier

Most middle ground waterproof jackets will use fabric of around 40D with reinforced areas on, say, shoulders and fore-arms being 80D or so. A full-on, hard-core climbing jacket might use 80D fabric all round.

Is 200 denier nylon waterproof?

yard 200 Denier nylon oxford fabric. ... This fabric is waterproof and perfect for applications where weight is critical without moving up to a heavier fabric.