Carr & Day & Martin Belvoir Tack Conditioning Spray. Keep your tack subtle, protected and provide a beautiful shine with the Carr & Day & Martin Belvoir Tack Conditioning Spray. Featuring a pure, clear and quality conditioner, Belvoir has been formed with glycerine and coconut oil to allow for regular use with the smallest amount of effort. The glycerine helps to fill and seal pores within the leather to help form a barrier against salt, dirt, grease and water. Use Belvoir Tack Clear to remove dirt and give your leather a beautiful shine.