Tri Flips are " bottle tops" for Tri Grip reflectors are sold as a set of two reversible covers that include; Silver, Gold, White, Black, Sunfire and the Designed for Digital colors of Sunlite and SoftSilver. When fitted over a Tri Grip, Tri Flips will not accidentally fall off or slip out of place. To put them on a Tri Grip, begin folding the Tri Grip until the sides begin to bend in, then stop folding it. Slip the handle of the Tri Grip through the opening at the wide side of the Tri Flip and feed it through the narrow edged bottom of the Tri Flip. Let the Tri Grip open up and the Tri Flip will be taut. The Velcro strips centered at the wide side of the Tri Flip reflector keeps the Tri Flips securely in place. Tri Flips do not have to be removed when folding a Tri Grip. Tri Flips fit regular size (original 33"version) Tri Grips.