A releasably-engageable strap loop having a unitary body is configured to enhance the securement of a strap or other material within a limited range of motion. The strap loop can be employed to secure, among other things, a head-mounted display unit to a wearable article worn by an individual, facilitating restricted movement of the head-mounted display unit relative to the individual's preferred field of view or any other part of the individual while the individual is active. The releasably-engageable strap loop can include, among other things, a unitary body that can receive a strap, such as one employable to secure a head-mounted display unit to a wearable article or safety gear worn by an individual. In some embodiments, the releasably-engageable strap loop can also include a securing member that is releasably or permanently securable to an external body, providing additional securement and restriction of movement of the head-mounted display unit relative to the individual.