A4 compression shirts are made with 80% polyester and 20% spandex providing a 4-way stretch fit that is supportive and comfortable. The flat lock seams stretch and will not dig into you. The best in performance compression

• 80% polyester, 20% Spandex, 5 Ounces per square yard
• 4-Way stretch moisture management fabric with flatlock stitching on seams
• Moisture wicking keeps you Dry and cool
• Odor resistant material to help keep it fresh
• Stain release material to help keep it clean

80% polyester, 20% Spandex, 5 Ounces per square yardMoshay Inc.