Bumper is a DeFi risk management tool which provides price protection and trading opportunities from downside volatility. Although Bumper shares some similarities with Stop Losses, Options Desk and insurance policies, there are significant differences in Bumper’s architecture, functionality and approach to managing risk. Bumper is a price protection protocol, which is neither insurance, a stop loss or an Options desk, but something entirely different. It allows users to protect the value of their coins, so if the price goes below a chosen floor they are protected from further downside, whilst still being able to benefit from upside gains if the price goes the other way. On the other side of the market, Liquidity providers earn yield for depositing stablecoins. Yield is derived from premiums paid by buyers of protection. One of the things that makes Bumper unique is that both sides are not in direct competition with one another, and the way the premiums are calculated is based on the volatility during a protection term, rather than an agreed-upon price at the start of the term (as you expect on an options desk). This is a novel way of ensuring price protection in a provably fair manner.