The fisherman boxes have a non absorbent HDPE plastic lid. The nylon construction is hardier than ever which is great when preparing such baits as chokka with the use of a mallet. The seal of these new lids has been extensively tested at our factory and we are pleased to say that there is no difference whatsoever in terms of temperature variation between the full nylon and fibre glass lids” Exterior Dimensions: Height: 230 Length: 350 Width: 240 Interior Dimensions: Height: 170 Length: 290 Width: 175