I have the Tactical 4.0 System. Wear the fleece 4.0 vest part of it every day (Ok, with very rare exceptions
) for about 1 year and 3 months so far, with all of my EDC kit items in it (about 10-15 lbs in the pockets, but almost unnoticeable neither for me, not for the others). It feels like my second skin. No signs of wear as of yet (6-8 auto-wash cycles, rope drying). I believe, it is a real marvel of clothes design. Everything as advertised on their web-site. The outer shell of the system is even more impressive. Had it all together well tested during the trip to Russia Siberia, from 0F and strong wind, to 80F and very humid weather conditions. Very comfortable!