New to Go Samba inverted napa heads are a great invention! These heads have 2 layers, plastic on the outside and napa on the inside. The plastic layer gives them a nice aggressive attack but the napa layer inside keeps the sound nice and warm. You don't get annoying overtones with this head.
The old type of napa head had the napa layer on the outside, this was quite prone to getting damaged and breaking. Now that the napa is on the inside they have eliminated that problem!
Fully synthetic, these heads are completely waterproof!
I am constantly impressed with Timbra's drums and accessories! They are made well and look cool! They hand make all of their drum heads in São Paulo. And all are tested for quality.