Clogs that are nailed to a wooden board (approx. 30 by 40 cm) and with which the gardener tamps down the soil after sowing. The clogs are sometimes replaced by a wooden plank with straps that you fasten around your shoe; or fitted with ropes held taut by hand (1).
The peat-cutter uses such clogs to squeeze the water out of the peat banks before it is slashed with the mud-marking iron.
To walk on muddy surfaces, trips are attached under the shoes or boots; there the aim is to increase support. [MOT]
(1) Eg. CROMPVOETS & VINEYARD ep.2: 169.