I recently had a low-side fall at a speed somewhere between 60-70km/hr on a downhill corner. I slid approximately 25 metres or maybe a bit more, the bike another 20metres - did not hit anything. The road surface is an average abrasve tar top. I hid the ground with my left elbow and right knees and slid on them and also the outside of my left foot. i was wearing dri-rider X jacket, version II, the one with two layers on elbow area and weak impact protectors. I also have BMW Airflow Boots - basically an non-serious protective leather boots with good ventillation. I only have normal jean ( Rivers). there was a patch of oil and i lost the front. it was so unexpected that it took me about 1 second after the bike starting give way under me to just realise what happened. - i thought sh$t, i was only wearing jeans. the boots were worn on the side and the angle area - no damge to me whatsoever- but i would replace the boots - as i can feel the change in thickness on the leather area. the elbow area of jacket had a 50c hole- it worn through the first layer of material. the second layer seem unaffected at the hole. the seam was also torn in a couple area. The outside patch is very much still intact. I have the slighted scratch to my elbow, less than a quarter of a 5 cent piece. Felt it in the first 2 days - gone by the third day. My right kneecap area didnt fare so well. The jeans had NO hole to it to my amazement. however i have flesh burnoff/ abrase through over a 20cent area - and it is still healing after a week. the inside of the pants where the knee area is full of small particle of jean material which also appear on my wound area - i wash that off with soap and water- ouch!!!!! i could feel and see a definate change of thickness to my skin on the knee my questions to everyone who had experiece in crashes or have done a lot of research in this area are these: 1) why was normal jean did not worn through (simply grazed), yet i had receive injury like this on my knees; 2) if kelvar lined jeans is supposed to prevent it being torn through, but may not as resistent to abrasion as some in this forum has suggested, like the infamous draggin test, what's the point of it if i am going to still get burn like i got. 3) looks aside, how does draggin jeans compared with codura pants in abrasion and tearing - ignoring the benefit of armour. 4) are there materials u can wear under the garment so as to reduce burn damage when the outside material has not been worn through. thanks for everyone's input.