I use Saddle Conditioner on my race suits, boots, baseball gloves, car seats, etc... Bick 4 if the leather is already clean. https://www.amazon.com/stores/Bickm...ef_=ast_bln&store_ref=bl_ast_dp_brandLogo_sto I also use just straight up Lanolin after a wash to restore the natural oils in the suit. -Tom
Piss on them and let them dry in the sun. Also, piss on your hands and let them dry, prevents blisters and toughens your palms.
Most of the big box sporting goods stores haves a steamer for new baseball gloves that sets them up nicely for conditioning.