FlexShares High Yield Value-Scored Bond Index Fund (HYGV) invests in high yield securities, which are considered highly speculative, and is subject to greater credit risk, price volatility and risk of loss than if it invested primarily in investment grade securities. There is a higher risk that an issuer will be unable to meet principal and interest rate payments on an obligation and may also be subject to more substantial price volatility due to such factors as interest rate sensitivity, market perception of credit worthiness of and general market liquidity than if the fund invested in investment grade securities. The fund may invest in distressed securities, which generally exposes the fund to risks in addition to investing non-investment grade securities. These risks can adversely impact the Fund's return and net asset value. When interest rates rise, the value of corporate debt can be expected to decline. The value of the securities in the Fund's portfolio may fluctuate, sometimes rapidly and unpredictably at a greater level than the overall market. The Fund may invest in derivative instruments. Changes in the value of the derivative may not correlate with the underlying asset, rate or index and the Fund could lose more than the principal amount invested. The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. The fund is also subject to the risk that the Fund's investment in companies whose securities are believed to be undervalued will not appreciate in value as anticipated.