MAP Seat Box QRS 30mm Legs / Short, Medium, Long, Fixed & Extending / Leeda

Preston Absolute Seatbox Tele Legs 30mm

Preston Inception Seatbox Cover

PRESTON OFF BOX xs legs converts for 36 mm seat box add ons

RIVE Seatbox Aluminium 36mm Leg (1x 49cm) inc footplate

Fishing Seat Box Knob - Pack of Six. Will fit Preston and most other boxes.

5 x Preston Innovations Offbox 30mm - 19mm Square Leg Insert Adapter Seatbox

Preston Seatbox Shoulder Strap Chair Padded Adjustable Clip On