▁oil sk in ▁jack ets ▁include ▁an ▁inner ▁se al ▁at ▁the ▁w rist ▁similar ▁to ▁that ▁on ▁a ▁sc uba ▁diver ' s ▁dry suit ▁to ▁prevent ▁water ▁from ▁being ▁forced ▁up ▁the ▁sle e ve . ▁P ock ets ▁on ▁tr ous ers ▁and ▁jack ets ▁are ▁often ▁l ined ▁with ▁quick - d ry ing ▁synth etic ▁fle e ce ▁that ▁is ▁warm ▁even ▁when ▁so aked . ▁A ▁recent ▁innov ation ▁is ▁remov able ▁soft ▁lin ings , ▁which ▁enables ▁them ▁to ▁be ▁was hed . ▁▁ ▁Some ▁oil sk in ▁jack ets ▁include ▁a ▁built - in ▁har ness , ▁typically ▁a ▁st rap ▁around ▁the ▁ch est ▁to ▁clip ▁into ▁a ▁lif eline . ▁While ▁convenient , ▁this ▁is ▁not ▁nearly ▁as ▁safe ▁as ▁a ▁separate ▁multi - point ▁har ness , ▁often ▁provided ▁with ▁an ▁integrated ▁life jack et . ▁ ▁Some ▁models ▁of ▁high - end ▁oil sk in ▁jack ets ▁contain ▁fl ot ation ▁and ▁may ▁also ▁function ▁as ▁life jack ets ; ▁surv ival ▁equipment ▁such ▁as ▁lights , ▁fl ares , ▁and ▁emer gency ▁position - ind ic ating ▁radio be acon ▁station ▁( E PI R B ) ▁are ▁also ▁available ▁as ▁integrated ▁access ories . ▁ ▁See ▁also ▁▁▁ ▁O il cl oth ▁ ▁W ax ed ▁cot ton ▁ ▁W ax ed ▁jack et ▁ ▁References ▁ ▁External ▁links ▁ ▁Classification ▁of ▁F oul ▁We ather ▁G ear ▁ ▁Category : Co ats ▁( cl othing ) ▁Category :