Your guitar is made of thin wood which is easily affected by temperature and relative humidity. This combination is the most important single part of your guitar’s surroundings. Ramirez keeps its factory at a constant 21 degrees celsius and 45-55 percent relative humidity. If either humidity or temperature varies considerably from these factory conditions, your guitar may be compromised. A rapid change in temperature or long exposure to extreme temperatures may cause small cracks in the finish. We recommend the use of a hygrometer/thermometer to measure the relative humidity and temperature surrounding your guitar.