The document summarizes 10 special features of insurance contracts: 1) Aleatory - Insurance contracts are aleatory in nature as the insured may receive substantially more in claims than premiums paid, depending on chance. 2) Adhesion - Insurance contracts are contracts of adhesion as the insurer writes the contracts and presents them to the insured on a "take it or leave it" basis. 3) Utmost good faith - Both parties must have faith in each other. The insured must disclose all material facts and the insurer must only avoid the contract if the insured intentionally misrepresents or conceals facts. 4) Executory - The insurer only performs its obligations if certain events like losses occur.