Bad Boy Legacy III Shorts 4D Stretch &ndash; Fourth dimension fabric provides peak four way stretch for ultimate flexibility. Low Profile &ndash; Custom built folding Velcro closure guarantees extra security while preventing rubbing and irritation Super Lite Vastek &ndash; Charcoal bamboo fibers retain bio-thermal heat, essential to intramuscular vascular flow. Ballistic Lycra &ndash; Durable lycra gusset with improved stretch for mobility and maximum performance. Stretch Micro Mesh &ndash; Stretch micro mesh for improved mobility and venting.