While never landing on the moon, white NASA Velcro watchbands were flown on Apollo missions 7 and 8, and used in preparation for Apollo missions 9, 10, 11, and 12. Their component list was the most extensive, involving many "Space-Age" materials that are either no longer available in their original form , or have nowadays become commonplace. To re-create this watchband as accurately as possible, I have used materials with the same look and feel.
Components with shortened dimensions:
First among the materials is the Velcro loop tape, which has the pile made from regular woven loops just like the original speciality Astro-Velcro®. In addition, it is laminated with polyurethane to simulate the Flourel® elastomer backing.
The 316 stainless steel D-ring is specially formed to minimise the ring gap when worn
Preserving both the characteristic D-ring and elastomer backing involves a design trade-off. Please try avoid wearing the strap too tight, to reduce strap edge uneven stretching inside the D-ring.
Components with identical dimensions:
The bright white keepers that securely hold the watch in place are made from specially fabricated PTFE laminate similar to the original though but now discontinued DuPont Armalon®
A plain weave coated Nylon simulates the beta cloth label.
With smaller wrists, the strap "end-cap" for the fastener hooks will protrude, and might be a concern. This can be solved with the aid of the optional ring to hold it flat against the keeper as shown below.