You may have found this already, but Cabot Thermal Wrap is almost identical to Aspen's aerogel blanket materials (the patent expired). This is the same material as the stuff used in Toasty Feet insoles, POE aerogel sleeping pads, and Burton ski jackets. I've used it to make experimental sleeping pads and insoles, and I've used it at work to insulate cryogenic vessels.
I think it has some potential for sleeping pad and apparel applications, but not to the extent that some imaginative members of the MYOG crowd might hope. It has several shortcomings.
The product is a polyester felt mat filled with aerogel dust. It is extremely dusty (this is why Aspen and Cabot both advertise that their products are "less dusty"). Any flexion of the blanket causes large quantities of fine aerogel dust to be lost, eventually leaving only a polyester mat. This isn't a problem for insulation of pipes or cryogenic vessels, but it is a problem for apparel.
It is very heavy compared to typical apparel insulation (very low insulative value per unit mass). I think Richard Nisley calculated that, per unit weight, high fill power down is 52 times warmer than pure aerogel (and the Cabot and Aspen blankets are not pure aerogel). It only excels as an insulator when low volume and resistance to compression are important, not low mass. An aerogel jacket or sleeping pad could be extremely thin, but also be very heavy. One of the materials I have used is Aspen's Spaceloft 6250, which is 6mm thick (about 1/4 inch) and it weighs over two pounds per square yard.
So, for applications where low volume and compression resistance are important and the required quantities are small (like gloves or insoles), aerogel blanket encapsulated in plastic film could prove serviceable. For other kinds of apparel or in sleeping pads, it's just too heavy.
Aerogel granules under soft vacuum (10 torr) in metallized barrier film envelopes have much greater potential, in my opinion. Panels of vacuum-sealed aerogel granules are half the density of aerogel blanket and their insulative value per unit volume is five times greater. An inch-thick piece of eva foam can achieve R5, an inch-thick piece of aerogel blanket can achieve R10, and an inch-thick aerogel granule vacuum panel can achieve R50.
