Right.
Jersey is ok for cellphone, light food and maybe for some light clothing.
But if you put something heavier than a cellphone, like a multitool+knife+tire levers+tubes, for sure you will fuck up the jersey's fabric, make it saggy. Also, it's uncomfortable as fuck. It's better put all those things in a saddlebag and the pump on the frame.
Triangle is for bottles.
And if i need to carry more heavy things (like extra tools, extra food as fruits, extra tube) i can put them on a fanny pack arround neck/shoulder or attach it to the handlebar using velcro tapes.
>>1024251>rack+panniers on an xc track 
