Sealy, your trusted mattress supplier for 140 years, has designed a mattress that is both supportive and affordable. Feel the support with the Sealy Responseâ„¢ Open Coil unit. The SealyCoolâ„¢ Air Gel Foam layer gives you a soft, supportive feel. SealyCoolâ„¢ Air Gel Foam adds additional support and cushion. A good value mattress for a spare bedroom or kids room.