Most RBX running shorts are polyester/spandex blends. Some listings specify 92% polyester and 8% spandex, while others list polyester and spandex more generally.
Inseams typically range from about 5 inches to 9 inches; common options list 5-inch and 9-inch inseams.
Descriptions show pull-on elastic waists and adjustable drawstring waistbands. Listings mention pull-on closures, elastic or elastic-knit waistbands, and front drawstrings.
Some shorts include side pockets or full-sized pockets; certain walking/hiking listings explicitly list 'Side Pocket' and 'Full Sized Pockets.'
They are commonly described as moisture-wicking with quick-dry shells. Many listings call out 'Moisture Wicking' and fabrics 'designed to dry quickly.'
Care guidance varies by listing: some explicitly state 'Machine Wash, Tumble Dry,' while others do not provide washing or drying instructions.
Available colors include charcoal and black, and some items are described as having a heathered finish.
Fabric weights range from 'Lightweight Fabric' to 'Extra Lightweight' across the options.