The padded shirt is light armor.

The shirt looks like it offers protection for the following areas:

    right arm
    left arm
    chest
    abdomen
    back

You feel certain that a padded thick imperial weave shirt sealed with protective wax appears to impose high (5/8) maneuvering hindrance and light (2/8) stealth hindrance, offering:
    very high (8/15) protection and very good (8/17) damage absorption for puncture attacks.
    very high (8/15) protection and high (9/17) damage absorption for slice attacks.
    great (9/15) protection and very good (8/17) damage absorption for impact attacks.
    high (7/15) protection and moderate (6/17) damage absorption for fire attacks.
    very good (6/15) protection and good (7/17) damage absorption for cold attacks.
    good (5/15) protection and fair (5/17) damage absorption for electrical attacks.

If you were only wearing a padded thick imperial weave shirt sealed with protective wax you could expect your maneuvering to be minimally (2/14) hindered and your stealth to be minimally (2/14) hindered.

You are certain that the padded shirt is unusually resilient to damage (16/18), and is in pristine condition (99-100%).

The padded shirt is extremely soft.
You are certain that the padded shirt weighs exactly 171 stones.
You are certain that the padded shirt is worth exactly 1142391 Kronars.