Namsan Double Layer Raincoat For Doggie Puppy Pets Dogs -Medium/M -Pink M-Back Length 9.8"/25cm,Chest--14.5"/37cm,Neck--10.2"/26cm(suit for 3-5 lbs) please don't choose the size by "I guess, I suppouse, I think it can fit "Because your baby is growing up everyday" ,Choosing the size according to the measurement of your baby is the most suitable way. Wipe clean with a damp cloth or sponge.Added reflective strip on back provides extra visibility in the rain Suggest FBA Service for you: 30 Days Money Back Guarantee And Simple return About Delivery: FBA(Fulfillment By Amazon) can 1 day delivered.,FBM(Fulfillment By Merchant) usually 7-14 days, not as Amazon shows: 14-28 working days.