BENEFIT OF GUA SHA- Gua sha Massage Scraping is a traditional Chinese medicine science therapy.Using scraping tools can stimulate immune system, activate sweat glands, excrete waste. Scraping massage also eases pain from plantar fasciitis muscle knots etc. Both acupuncturist & Physical therapists regard Gua sha as green natural therapy, helps to diminish stress, fatigue, exhaustion, better to relax whole body.GUIDANCE BOOKLETS & FULL-BODY MASSAGE - 4 guasha boards with different shapes and sizes aiming to offer you complete massage including keep young on face,shoulders,thighs, tight calves,back belly waist etc. All double beveled edges are smooth and slightly rounded ,so never scratch and hurt your skin even when doing trigger point. INSTRUCTIONS BOOK can help you use them better especially for beginner.PREMIUM NATURAL QUALITY -The stone comes from the nature ,which is manually carved and polished into the desired shape. It contains a variety of mineral elements that are beneficial to human body and skin, Weight: Appro 50g. Thickness:5mm. It is easy to handle - using warm water, hand soap or body wash is sufficient.If use some coconut massage oil , it really makes your skin feel smooth and achieve better effects.EXQUISITE PACKAGE-The double-layer FOAM BAG is sealed separately to ensure the scraping massage tool tidy.LABOR-SAVING & EASY USING-Choose which tool by looking at the contours of each one, then use the one that fits best. Excellent to effortlessly glide over any part of the body. Keep the massage scraping plate at an oblique angle so that guasha board won't hurt the skin. When used regularly(DIVEDE 3 GROUPS ,5 TIMES EACH GROUP, UNDER 30MINUTES) , it can greatly benefit your body.