Love this product its easy to put on and it dosnt hurt at all!yayy!! Lol and the best is that its real human hair so it really does look natural you can curl it dye even bleach it (trust me me i put this hair to the test)and it acted like real hair does.be careful though just like our hair this hair can get damage if you dye or bleach to much.it looks so real that even my mom wants me to buy her one for her.if you are having trouble wearing this my advice would be to get 2 hair ties.put you on hair in a ponytail and then put this hair on.hair ties are sturdy and not to thick were it looks fake.you can also put bobby pins if you still feel that its lose or if your scared that it could come off.but i doubt that will happen ive use this in the gym at work and ive had no slip ups of any kind.also when u get your own hair up in a ponytail make sure your hair isnt wet i did that before and it felt reallly weird.like if it was gona fall off.hope this helps.also if your confues with the 100 grams and all that basicly the higher the gram the more hair comes in the ponytail so its really up to you what your preference.full or natural looking