Home textiles have many functions, as well as their aesthetic features for the decoration of homes, that will make people's lives more comfortable. In other words, home textile products are textiles that increase the quality of life and satisfy the daily essentials of individuals for a healthy sleep. It is observed that the home textile industry is becoming exceedingly competitive and products that provide customer satisfaction and offer quality are generally preferred in the global market. The objective of this study is to determine the thermal comfort properties of duvets by making thermal resistance measurements in home textile products and to reveal the effects of properties on sleep quality. In line with this objective, the air and heat permeability of the duvets were measured with the TOG (Thermal Overall Grade) value. As a result of the measurements, the effects of the fiber type and thickness of the filling material in the duvet layers, the fiber type and density of the fabrics and interlining on the TOG values were observed. According to the high or low TOG value, the thermal resistance properties of the duvets were determined with the effect of layer, thickness and material. As a result of this study, the fabric, interlining and filling materials in the duvet layers were standardized according to the TOG values obtained.

People spend a third of their lives asleep. A good night's sleep is a key to waking up pain-free, while providing an excellent opportunity to rest. Pillows are indispensable objects for a comfortable sleep. Sleeping position and personal preferences influence on the type of pillow a person need. However, there is no mutual language for the perception of comfort. This study focuses on the experimental study of the hardness measurement process to establish an objective method for evaluating pillow hardness and to examine the relationship between sensory evaluation and compression properties of pillows. In order to determine the comfort and pillow hardness parameters, studies on various fields and products were examined. A machine that measures and defines the compression amount of the pillow and the height data obtained by applying a certain force to the entire surface of the pillow has been designed. Pillows with different properties and weights were tested and the height values after applying the force were processed within the data obtained from the machine. By determining the limit and mean values, the pillows were categorized as soft, medium-soft, medium, medium-hard and hard. As a consequence of this study, through the developed hardness measurement method, product classifications were made and the user's feeling on pillow hardness was observed.

Seating groups, designed to support various human activities such relaxation, calming and relieving tiredness, are one of the most important products that directly affect the quality of life. Resulting from the product diversity and development of technology, human expectations from products have increased. Comfort, aesthetics and ergonomics have gained importance in selection criteria at this phase. However, the perception of comfort varies according to body mass index, tiredness level and psychology of the person. This variety poses a major problem in standardizing comfort. The furniture industry needs an understandable comfort scale that can appeal to the majority of the society. This study focuses on two issues: a checklist based on the parameters determined to evaluate the comfort of seating groups by determining the comfort parameters, and the development of a mathematical modeling method of comfort based on the feedback obtained from the users about the products. In order to determine the comfort criteria, comfort studies made in various areas and products have been examined, and a machine that applies pressure to the back and seating points of the seating groups in accordance with the ergonomic structure of the people, records the reaction force obtained from the product according to the applied pressure in the data memory and converts it into a graphic. The designed machine processes the mathematical formula to be created with the variables of position, force and time to reach the force, within the data it receives, and ensures a comfort value in the products. As a result, the comfort standard in seating groups has been determined by the mathematical modeling method and will be made into a quality standard by using the method determined in new product designs.