Use my tracksters most days, my 'older pair' now have 2 x 50p size holes under my sit bones. Last year wiggle had them on special, so i bought 2 pairs, only dived into the un opened packet last night to see how thick they are supposed to be.. TOP TIP !!!!!!!!!! replace the drawer cord with stout elastic, and either tie up were you want it, or fit a toggle, as due to the slightly shorter back, in order to keep them 'up' they have to be tight enough to leave a red ring on ones middling bits. bought my first pair in C. 1993 in a small camping/hiking shop in Crickhowell,whilst on a x-mas mtb weekend in my camping bus. ( these actually lasted me 25 years
, my last pair lasted about 5 years, but tbf I now use a leather saddle)