The bottom of a shopping basket mold is reinforced with ribs to increase load capacity, with wall thickness typically 2.5–3.5 mm. Handle sections require slide cores. Stacking steps at the rim are held to a tolerance of ±0.15 mm. 4‑cavity or 6‑cavity designs are common, and runners must be balanced to ensure consistent filling across cavities. HDPE is used, and cooling must be uniform across all cavities.