A tier is easily stacked or layered on top of your existing Starter Pack or another tier of the same size and colour. Choose a colour and size that suits your original Starter Pack.
Use the table below to buy the correct Tier.
| Tier | Starter Pack |
| 4 Pairs | 8 Pairs |
| 5 Pairs | 10 Pairs |
| 6 Pairs | 12 Pairs |
| 7 Pairs | 14 Pairs |