Elastoplast Sport - Adjustable Knee Support Amazon Prime Deal $7.99 + Delivery (Free with Prime / $49 Spend) @ Amazon AU

I saw a deal @ $11.99 in Chemist Warehouse but this is better and I took 2 from Amazon while I have free Amazon Prime Trial. Don't forget 6% Cashrewards.

Usually dispatched within 1 to 3 weeks.
Ships from and sold by Amazon AU. Gift-wrap available.
Provides extra firm support to stiff, weak or injured knees
Re-inforce side stabilisers
Adjustable strap for custom fit and level of support
Fits right or left knee
Breathable materials

(Note: You may need to click the "3 New from $7.99" link to be able to choose Amazon as the preferred seller.)