Today I found two clothing items that I wanted to keep at dynamic boat spawns. I am unsure if they both came from the same spawn as I found several during this trip along the coast.

Black Pristine Raincoat
Green Damaged Cargo Pants

Both of these items are acting as containers within my inventory in the same way as a medkit or a protector case. For example, when I clicked the X in the Hands window to remove a Makarov from my hands, the Makarov (having no free inventory space to go into, went into the Black Raincoat which was in my V3S cargo inventory. It should be noted that I had the Gear UI open at this time and the V3S Cargo inventory space was viewable in the vicinity window. I, not expecting this behavior, thought the item had despawned. I later discovered that I could not move the raincoat from the truck inventory to my backpack. After dropping the raincoat from the truck inventory to the ground, I saw that the Makarov was in fact contained within the raincoat which was preventing me from moving the raincoat into my pack.