Letterbox Gardens - is our narrowest grow kit with its large promotional space of approx. 1500mm2 is the ideal promotional item for postal shipping since it fits easily through any mailbox slot. The set still contains everything necessary the packaging sleeve with a (promotional) message is wrapped around a grow kit filled with a large coconut fibre tablet and a small plant seed bag. The plant seeds can be chosen from our large selection. Dimensions: 105 x 105 x 15mm. Weight: 65g. Material: bag is polyethylene LDPE plastic (low density polyethylene).