Membership + race-day gear packages checkout.
The five tiers (Solo / Team S / M / L / XL, scaled to the number of supporters) and individual items; checkout via your cart (Mollie: iDEAL + cards).
Solo = just you; Team S–XL scale with the number of supporters (1–3, 4–6, 7–9, 10+). Shirts = 1 athlete + the supporters.