Section 160.052-6 - Construction-nonstandard vests(a)General. The construction methods used for nonstandard buoyant vests must be equivalent to those requirements in § 160.052-5 for a standard vest and also meet the requirements in this section.(b)Size. Each nonstandard vest must contain the following volume of plastic foam buoyant material, determined by the displacement method: (1) Five hundred cubic inches or more for an adult size;(2) Three hundred and fifty cubic inches or more for a child, medium size;(3) Two hundred and twenty-five cubic inches or more for a child, small size.(c)Arrangement of buoyant material. The buoyant material in a nonstandard vest must: (1) Be arranged to hold the wearer in an upright or backward position with head and face out of water;(2) Have no tendency to turn a wearer face downward in the water; and(3) Be arranged so that 70 to 75 percent of the total is located in the front of the vest.(d)Neck opening. Each cloth-covered nonstandard vest must have at the neck opening: (e)Adjustment, fit, and donning. Each nonstandard vest must be made with adjustments to: (1) Fit a range of wearers for the type designed; and(2) Facilitate donning time for an uninitiated person.CGD 72-163R, 38 FR 8120, Mar. 28, 1973