Samsonite's Base Boost collection is made of a featherweight polyester material and is the ideal choice for business and leisure travelers who like to travel light. The simple yet stylish design of all cases in the soft-shell suitcase series is expandable in size for added flexibility. Samsonite's Base Boost collection is made of a featherweight polyester material and is the ideal choice for business and leisure travelers who like to travel light. The simple yet stylish design of all cases in the soft luggage series is expandable in size for added flexibility.