Would suggest you to carry thermal wear, furry jackets, thick socks and boots as it would be snowing in Manali at that time of the year and the temperature would be very low. You may also want to carry shawls, scarfs or caps for the same reason.
Hey Athulya, The average temperature in Manali during February ranges from -7 to 10 degree celcius, which means that it is super cold! I would suggest you to carry thermals, fleece jackets, a down jacket or wind sheeter, gloves, caps and mufflers for sure. Even though the sun may be shining bright during the day, the winds will be super chilly. As long as you're well clad, don't worry, you will be able to enjoy your trip :)
Well, there will be snow at that time so make sure you carry thermal inner wear, waterproof jacket (with hood would be preffered), snow boots or at least waterproof shoes, winter cap and nice thick socks. Try to wear comfortable clothes, don't go for jeans and heavy clothes. And one last thing, don't forget to carry moisturizer, it will help alot.