According to Correctional Service Canada National List of Personal Property for Men Inmates can have 4 - Shorts

• 100% polyester mesh, 3.4 oz. per square yard

• Liner: 100% polyester, 2.5 oz. per square yard

• Contains moisture wicking, stain release, and is odor resistant

• 1½" Cover elastic waistband with an inside draw cord and 7" inseam