In the age of hybrid, the fashion industry has created multiple patterns of hybrid fashion due to mixed styles and genres. Fashion mixed with tradition and future and various cultures is emerging as a trend so that Asian cultures are reinterpreted in a modern way(Samsung Design Net. 2014). Korean images also change every year into a new type of cultural hybrid. This study aims to present esthetic and trendy hybrid outer wear designs applicable to the fusion of tradition and present and the west and the east as well as diverse life styles for the major target of consumption, the senior generation with young sense. This study conducted both theoretical and empirical study. The theoretical study looked into the characteristics of digital fashion illustrations using Sumuk technique and of senior outer wear through the precedent study and literature. In the empirical study, fashion illustrations were made according to the characteristics of digital fashion illustrations with Sumuk technique, and then fabric was made through digital printing. By doing so, hybrid outer wear designs for the senior generation were developed based on the characteristics of senior outer wear, and the real artwork was made. The findings are as follows. First, the characteristics of digital fashion illustrations using Sumuk technique are the hybrid expression where the spirit of inner feeling of oriental thinking, implications of symbolism and metaphor through blanks and lines, and fortuity of ink blurs and lines are recreated in a modern way through digital fashion illustration characteristics such as hybridity of multi-cultures and heterogeneous factors, expandability of blurring boundary, human-oriented playfulness, and sensibility of inner expression. Second, outer wear for the senior generation puts the most emphasis on aesthetic factors including designs, styles, youth, and complement of figure, followed by symbolism such as convenience of dressing or undressing, comfort, functionality of flexible size, trend, express of individuality, and dignity. In addition, this generation prefers outdoor wear for social, cultural, and casual activities and demand hybrid city wear designs adding the characteristics of outdoor wear that is highly worn for various city life styles. Third, the design motifs of fabric made by digital printing of Sumuk technique-based digital fashion illustrations include traditional ornaments of Joseon Dynasty such as norigae(Korean traditional ornaments worn by women), binyeo(Korean traditional ornamental hairpin), and ddeoljam(ornamental hairpin), mix traditional and Korean spirit with modern sensibility, and connote esthetic beauty of ornamental effects for women’s beauty and symbolism of lucky signs and wishes. Fourth, senior outer wear was designed using the made fabric. Work 1 arranged prints with the motif of traditional norigae in a spaced pattern. Hybrid outer was designed with comfortable, light, and reversible functions by using A line silhouette considering the senior generation’s figure, single buttons for easy clothing change, and outdoor wear materials and highlighted the utilization of city wear. Work 2 used border pattern of fashion illustration prints that use binyeo as its motif, and it was designed for social and cultural life styles with the fusion of tradition, which uses tent silhouette durumagi(traditional Korean outer coat) and composition lines that are plane and straight lines, and modernism. It highlighted functionality by using zippers and single buttons for each clothing changing and outdoor materials. Work 3 arranged fashion illustrations made by the motif of ddeoljam in a spaced pattern. This is a balloon silhouette considering the senior generation’s figure and a urban, modern design with unbalanced hem line with asymmetry of light and left. A zipper was attached, and a light and flexible outdoor material was used to emphasize its functionality. Work 1, 2, and 3 made the fabric of cultural hybrid sense using Sumuk technique-based digital fashion illustrations and used the design considering the senior generation’s figure and an outdoor material, and expressed easy clothing change and design of city wear. This is a hybrid senior fashion design expressing the fusion and coexistence of traditional and modern beauty, Korea’s oriental beauty and modern western beauty, and outdoor wear’s functionality and city life styles. This study will contribute to the invigoration of the senior fashion market that is newly emerging and the development of high-value added products as it presents hybrid outer wear adding functionality applicable to various life styles for the senior generation with the young sense.