46 C.F.R. § 160.176-11 Performance.
Title 46 - Shipping
(a) General. Each inflatable lifejacket must be able to pass the tests in §160.176–13 of this part. (b) Snag Hazard. The lifejacket must not present a snag hazard when properly worn. (c) Chamber Attachment. Each inflation chamber on or inside an inflatable lifejacket must not be able to be moved to a position that- (1) Prevents full inflation; or (2) Allows inflation in a location other than in its intended location. (d) Comfort. The lifejacket must not cause significant discomfort to the wearer during and after inflation.
Title 46: Shipping
PART 160—LIFESAVING EQUIPMENT
Subpart 160.176—Inflatable Lifejackets
§ 160.176-11 Performance.

