Report Abuse A wind breaker, a sweatshirt and long pants are highly recommended for August in San Francisco. Of course if you are venturing into the central valley then shorts and very light weight tops would be appreciated. It could be over 100F in the Valley and only in the 60's in San Francisco on the same day. So the advice is to pack layers.
Bondo (putty) Bondo putty is an automotive body filler and a brand name used by 3M for a line of American-made products for automotive, marine and household repairs.
R4271-N/R4471 - Neoprene/EPDM/SBR Blend. A slightly more dense version of the R4261 material with much of the same product attributes. This cellular rubber is a low density high compression set material designed to offer the best combination of economies and performance.